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Finding the Fourth Proportional to 159,516.42, 220,130.87 and 90,605.40

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Solution

The fourth proportional to 159,516.42, 220,130.87 and 90,605.40 is: 125,034.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,516.42 : 220,130.87 = 90,605.40 : x
  2. Step 2: Convert to fraction form
    159,516.42/220,130.87 = 90,605.40/x
  3. Step 3: Cross multiply
    159,516.42x = 220,130.87 × 90,605.40
  4. Step 4: Simplify right side
    159,516.42x = 19,945,045,755.21
  5. Step 5: Solve for x
    x = 19,945,045,755.21/159,516.42
  6. Step 6: Final answer
    x = 125,034.44

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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.