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Finding the Fourth Proportional to 103,462.92, 155,166.06 and 28,565.16

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Solution

The fourth proportional to 103,462.92, 155,166.06 and 28,565.16 is: 42,839.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,462.92 : 155,166.06 = 28,565.16 : x
  2. Step 2: Convert to fraction form
    103,462.92/155,166.06 = 28,565.16/x
  3. Step 3: Cross multiply
    103,462.92x = 155,166.06 × 28,565.16
  4. Step 4: Simplify right side
    103,462.92x = 4,432,343,330.47
  5. Step 5: Solve for x
    x = 4,432,343,330.47/103,462.92
  6. Step 6: Final answer
    x = 42,839.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.