Home / 90,760.32-136,232.64-57,398.40

Finding the Fourth Proportional to 90,760.32, 136,232.64 and 57,398.40

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Solution

The fourth proportional to 90,760.32, 136,232.64 and 57,398.40 is: 86,155.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,760.32 : 136,232.64 = 57,398.40 : x
  2. Step 2: Convert to fraction form
    90,760.32/136,232.64 = 57,398.40/x
  3. Step 3: Cross multiply
    90,760.32x = 136,232.64 × 57,398.40
  4. Step 4: Simplify right side
    90,760.32x = 7,819,535,563.78
  5. Step 5: Solve for x
    x = 7,819,535,563.78/90,760.32
  6. Step 6: Final answer
    x = 86,155.88

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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.