Home / 99,377.14-137,164.81-56,381.80

Finding the Fourth Proportional to 99,377.14, 137,164.81 and 56,381.80

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Solution

The fourth proportional to 99,377.14, 137,164.81 and 56,381.80 is: 77,820.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,377.14 : 137,164.81 = 56,381.80 : x
  2. Step 2: Convert to fraction form
    99,377.14/137,164.81 = 56,381.80/x
  3. Step 3: Cross multiply
    99,377.14x = 137,164.81 × 56,381.80
  4. Step 4: Simplify right side
    99,377.14x = 7,733,598,559.17
  5. Step 5: Solve for x
    x = 7,733,598,559.17/99,377.14
  6. Step 6: Final answer
    x = 77,820.70

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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.