Home / 123,711.40-185,567.10-57,129.40

Finding the Fourth Proportional to 123,711.40, 185,567.10 and 57,129.40

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Solution

The fourth proportional to 123,711.40, 185,567.10 and 57,129.40 is: 85,694.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,711.40 : 185,567.10 = 57,129.40 : x
  2. Step 2: Convert to fraction form
    123,711.40/185,567.10 = 57,129.40/x
  3. Step 3: Cross multiply
    123,711.40x = 185,567.10 × 57,129.40
  4. Step 4: Simplify right side
    123,711.40x = 10,601,337,082.74
  5. Step 5: Solve for x
    x = 10,601,337,082.74/123,711.40
  6. Step 6: Final answer
    x = 85,694.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.