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Finding the Fourth Proportional to 105,155.88, 145,108.44 and 62,715.12

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Solution

The fourth proportional to 105,155.88, 145,108.44 and 62,715.12 is: 86,542.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,155.88 : 145,108.44 = 62,715.12 : x
  2. Step 2: Convert to fraction form
    105,155.88/145,108.44 = 62,715.12/x
  3. Step 3: Cross multiply
    105,155.88x = 145,108.44 × 62,715.12
  4. Step 4: Simplify right side
    105,155.88x = 9,100,493,227.61
  5. Step 5: Solve for x
    x = 9,100,493,227.61/105,155.88
  6. Step 6: Final answer
    x = 86,542.88

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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.