Home / 138,105,612,314.58-190,583,716,712.08-77,138,869,257.61

Finding the Fourth Proportional to 138,105,612,314.58, 190,583,716,712.08 and 77,138,869,257.61

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Solution

The fourth proportional to 138,105,612,314.58, 190,583,716,712.08 and 77,138,869,257.61 is: 106,450,506,678.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,105,612,314.58 : 190,583,716,712.08 = 77,138,869,257.61 : x
  2. Step 2: Convert to fraction form
    138,105,612,314.58/190,583,716,712.08 = 77,138,869,257.61/x
  3. Step 3: Cross multiply
    138,105,612,314.58x = 190,583,716,712.08 × 77,138,869,257.61
  4. Step 4: Simplify right side
    138,105,612,314.58x = 14,701,412,406,082,519,695,360
  5. Step 5: Solve for x
    x = 14,701,412,406,082,519,695,360/138,105,612,314.58
  6. Step 6: Final answer
    x = 106,450,506,678.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.