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Finding the Fourth Proportional to 150,559.61, 207,776.07 and 85,143.20

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Solution

The fourth proportional to 150,559.61, 207,776.07 and 85,143.20 is: 117,499.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,559.61 : 207,776.07 = 85,143.20 : x
  2. Step 2: Convert to fraction form
    150,559.61/207,776.07 = 85,143.20/x
  3. Step 3: Cross multiply
    150,559.61x = 207,776.07 × 85,143.20
  4. Step 4: Simplify right side
    150,559.61x = 17,690,718,444.34
  5. Step 5: Solve for x
    x = 17,690,718,444.34/150,559.61
  6. Step 6: Final answer
    x = 117,499.77

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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.