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Finding the Fourth Proportional to 131,681.64, 197,478.60 and 56,755

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Solution

The fourth proportional to 131,681.64, 197,478.60 and 56,755 is: 85,113.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,681.64 : 197,478.60 = 56,755 : x
  2. Step 2: Convert to fraction form
    131,681.64/197,478.60 = 56,755/x
  3. Step 3: Cross multiply
    131,681.64x = 197,478.60 × 56,755
  4. Step 4: Simplify right side
    131,681.64x = 11,207,897,943
  5. Step 5: Solve for x
    x = 11,207,897,943/131,681.64
  6. Step 6: Final answer
    x = 85,113.60

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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.