Home / 157,319.20-217,105.76-89,339.20

Finding the Fourth Proportional to 157,319.20, 217,105.76 and 89,339.20

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Solution

The fourth proportional to 157,319.20, 217,105.76 and 89,339.20 is: 123,291.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,319.20 : 217,105.76 = 89,339.20 : x
  2. Step 2: Convert to fraction form
    157,319.20/217,105.76 = 89,339.20/x
  3. Step 3: Cross multiply
    157,319.20x = 217,105.76 × 89,339.20
  4. Step 4: Simplify right side
    157,319.20x = 19,396,054,913.79
  5. Step 5: Solve for x
    x = 19,396,054,913.79/157,319.20
  6. Step 6: Final answer
    x = 123,291.09

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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.