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Finding the Fourth Proportional to 103,507.93, 142,866.12 and 63,255.61

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Solution

The fourth proportional to 103,507.93, 142,866.12 and 63,255.61 is: 87,308.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,507.93 : 142,866.12 = 63,255.61 : x
  2. Step 2: Convert to fraction form
    103,507.93/142,866.12 = 63,255.61/x
  3. Step 3: Cross multiply
    103,507.93x = 142,866.12 × 63,255.61
  4. Step 4: Simplify right side
    103,507.93x = 9,037,083,568.93
  5. Step 5: Solve for x
    x = 9,037,083,568.93/103,507.93
  6. Step 6: Final answer
    x = 87,308.13

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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.