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Finding the Fourth Proportional to 150,355.65, 207,490.97 and 81,445.25

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Solution

The fourth proportional to 150,355.65, 207,490.97 and 81,445.25 is: 112,394.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,355.65 : 207,490.97 = 81,445.25 : x
  2. Step 2: Convert to fraction form
    150,355.65/207,490.97 = 81,445.25/x
  3. Step 3: Cross multiply
    150,355.65x = 207,490.97 × 81,445.25
  4. Step 4: Simplify right side
    150,355.65x = 16,899,154,646.73
  5. Step 5: Solve for x
    x = 16,899,154,646.73/150,355.65
  6. Step 6: Final answer
    x = 112,394.54

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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.