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Finding the Fourth Proportional to 131,566.64, 197,379.12 and 61,407.68

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Solution

The fourth proportional to 131,566.64, 197,379.12 and 61,407.68 is: 92,125.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,566.64 : 197,379.12 = 61,407.68 : x
  2. Step 2: Convert to fraction form
    131,566.64/197,379.12 = 61,407.68/x
  3. Step 3: Cross multiply
    131,566.64x = 197,379.12 × 61,407.68
  4. Step 4: Simplify right side
    131,566.64x = 12,120,593,839.64
  5. Step 5: Solve for x
    x = 12,120,593,839.64/131,566.64
  6. Step 6: Final answer
    x = 92,125.13

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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.