Home / 87,127.29-120,191.31-56,930.25

Finding the Fourth Proportional to 87,127.29, 120,191.31 and 56,930.25

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Solution

The fourth proportional to 87,127.29, 120,191.31 and 56,930.25 is: 78,534.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,127.29 : 120,191.31 = 56,930.25 : x
  2. Step 2: Convert to fraction form
    87,127.29/120,191.31 = 56,930.25/x
  3. Step 3: Cross multiply
    87,127.29x = 120,191.31 × 56,930.25
  4. Step 4: Simplify right side
    87,127.29x = 6,842,521,326.13
  5. Step 5: Solve for x
    x = 6,842,521,326.13/87,127.29
  6. Step 6: Final answer
    x = 78,534.77

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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.