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Finding the Fourth Proportional to 103,159.67, 142,385.66 and 62,895.63

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Solution

The fourth proportional to 103,159.67, 142,385.66 and 62,895.63 is: 86,811.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,159.67 : 142,385.66 = 62,895.63 : x
  2. Step 2: Convert to fraction form
    103,159.67/142,385.66 = 62,895.63/x
  3. Step 3: Cross multiply
    103,159.67x = 142,385.66 × 62,895.63
  4. Step 4: Simplify right side
    103,159.67x = 8,955,435,176.10
  5. Step 5: Solve for x
    x = 8,955,435,176.10/103,159.67
  6. Step 6: Final answer
    x = 86,811.40

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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.