Home / 128,387.20-192,577.20-58,266.40

Finding the Fourth Proportional to 128,387.20, 192,577.20 and 58,266.40

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Solution

The fourth proportional to 128,387.20, 192,577.20 and 58,266.40 is: 87,397.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,387.20 : 192,577.20 = 58,266.40 : x
  2. Step 2: Convert to fraction form
    128,387.20/192,577.20 = 58,266.40/x
  3. Step 3: Cross multiply
    128,387.20x = 192,577.20 × 58,266.40
  4. Step 4: Simplify right side
    128,387.20x = 11,220,780,166.08
  5. Step 5: Solve for x
    x = 11,220,780,166.08/128,387.20
  6. Step 6: Final answer
    x = 87,397.97

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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.