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Finding the Fourth Proportional to 157,043.70, 216,747.81 and 93,417.30

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Solution

The fourth proportional to 157,043.70, 216,747.81 and 93,417.30 is: 128,932.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,043.70 : 216,747.81 = 93,417.30 : x
  2. Step 2: Convert to fraction form
    157,043.70/216,747.81 = 93,417.30/x
  3. Step 3: Cross multiply
    157,043.70x = 216,747.81 × 93,417.30
  4. Step 4: Simplify right side
    157,043.70x = 20,247,995,191.11
  5. Step 5: Solve for x
    x = 20,247,995,191.11/157,043.70
  6. Step 6: Final answer
    x = 128,932.23

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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.