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Finding the Fourth Proportional to 102,687.69, 141,903.87 and 74,101.17

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Solution

The fourth proportional to 102,687.69, 141,903.87 and 74,101.17 is: 102,400.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,687.69 : 141,903.87 = 74,101.17 : x
  2. Step 2: Convert to fraction form
    102,687.69/141,903.87 = 74,101.17/x
  3. Step 3: Cross multiply
    102,687.69x = 141,903.87 × 74,101.17
  4. Step 4: Simplify right side
    102,687.69x = 10,515,242,794.53
  5. Step 5: Solve for x
    x = 10,515,242,794.53/102,687.69
  6. Step 6: Final answer
    x = 102,400.23

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1.5x scale

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.