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Finding the Fourth Proportional to 118,082.57, 162,945.80 and 66,407.39

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Solution

The fourth proportional to 118,082.57, 162,945.80 and 66,407.39 is: 91,637.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,082.57 : 162,945.80 = 66,407.39 : x
  2. Step 2: Convert to fraction form
    118,082.57/162,945.80 = 66,407.39/x
  3. Step 3: Cross multiply
    118,082.57x = 162,945.80 × 66,407.39
  4. Step 4: Simplify right side
    118,082.57x = 10,820,805,002.77
  5. Step 5: Solve for x
    x = 10,820,805,002.77/118,082.57
  6. Step 6: Final answer
    x = 91,637.62

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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.