Home / 87,659.20-131,488.80-56,166.40

Finding the Fourth Proportional to 87,659.20, 131,488.80 and 56,166.40

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Solution

The fourth proportional to 87,659.20, 131,488.80 and 56,166.40 is: 84,249.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,659.20 : 131,488.80 = 56,166.40 : x
  2. Step 2: Convert to fraction form
    87,659.20/131,488.80 = 56,166.40/x
  3. Step 3: Cross multiply
    87,659.20x = 131,488.80 × 56,166.40
  4. Step 4: Simplify right side
    87,659.20x = 7,385,252,536.32
  5. Step 5: Solve for x
    x = 7,385,252,536.32/87,659.20
  6. Step 6: Final answer
    x = 84,249.60

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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.