Home / 157,363.12-217,158.30-85,743.70

Finding the Fourth Proportional to 157,363.12, 217,158.30 and 85,743.70

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Solution

The fourth proportional to 157,363.12, 217,158.30 and 85,743.70 is: 118,324.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,363.12 : 217,158.30 = 85,743.70 : x
  2. Step 2: Convert to fraction form
    157,363.12/217,158.30 = 85,743.70/x
  3. Step 3: Cross multiply
    157,363.12x = 217,158.30 × 85,743.70
  4. Step 4: Simplify right side
    157,363.12x = 18,619,956,127.71
  5. Step 5: Solve for x
    x = 18,619,956,127.71/157,363.12
  6. Step 6: Final answer
    x = 118,324.78

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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.