Home / 138,314.08-190,871.40-77,884.84

Finding the Fourth Proportional to 138,314.08, 190,871.40 and 77,884.84

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Solution

The fourth proportional to 138,314.08, 190,871.40 and 77,884.84 is: 107,479.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,314.08 : 190,871.40 = 77,884.84 : x
  2. Step 2: Convert to fraction form
    138,314.08/190,871.40 = 77,884.84/x
  3. Step 3: Cross multiply
    138,314.08x = 190,871.40 × 77,884.84
  4. Step 4: Simplify right side
    138,314.08x = 14,865,988,449.58
  5. Step 5: Solve for x
    x = 14,865,988,449.58/138,314.08
  6. Step 6: Final answer
    x = 107,479.94

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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.