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Finding the Fourth Proportional to 157,146.56, 216,885.10 and 88,243.76

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Solution

The fourth proportional to 157,146.56, 216,885.10 and 88,243.76 is: 121,789.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,146.56 : 216,885.10 = 88,243.76 : x
  2. Step 2: Convert to fraction form
    157,146.56/216,885.10 = 88,243.76/x
  3. Step 3: Cross multiply
    157,146.56x = 216,885.10 × 88,243.76
  4. Step 4: Simplify right side
    157,146.56x = 19,138,756,711.98
  5. Step 5: Solve for x
    x = 19,138,756,711.98/157,146.56
  6. Step 6: Final answer
    x = 121,789.22

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1.5x scale

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.