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Finding the Fourth Proportional to 157,756.95, 217,678.89 and 93,217.20

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Solution

The fourth proportional to 157,756.95, 217,678.89 and 93,217.20 is: 128,624.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,756.95 : 217,678.89 = 93,217.20 : x
  2. Step 2: Convert to fraction form
    157,756.95/217,678.89 = 93,217.20/x
  3. Step 3: Cross multiply
    157,756.95x = 217,678.89 × 93,217.20
  4. Step 4: Simplify right side
    157,756.95x = 20,291,416,624.91
  5. Step 5: Solve for x
    x = 20,291,416,624.91/157,756.95
  6. Step 6: Final answer
    x = 128,624.55

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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.