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Finding the Fourth Proportional to 100,371.24, 138,510.24 and 62,120.62

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Solution

The fourth proportional to 100,371.24, 138,510.24 and 62,120.62 is: 85,725.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,371.24 : 138,510.24 = 62,120.62 : x
  2. Step 2: Convert to fraction form
    100,371.24/138,510.24 = 62,120.62/x
  3. Step 3: Cross multiply
    100,371.24x = 138,510.24 × 62,120.62
  4. Step 4: Simplify right side
    100,371.24x = 8,604,341,985.15
  5. Step 5: Solve for x
    x = 8,604,341,985.15/100,371.24
  6. Step 6: Final answer
    x = 85,725.17

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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.