Home / 87,081.17-120,151.01-55,238.45

Finding the Fourth Proportional to 87,081.17, 120,151.01 and 55,238.45

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Solution

The fourth proportional to 87,081.17, 120,151.01 and 55,238.45 is: 76,215.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,081.17 : 120,151.01 = 55,238.45 : x
  2. Step 2: Convert to fraction form
    87,081.17/120,151.01 = 55,238.45/x
  3. Step 3: Cross multiply
    87,081.17x = 120,151.01 × 55,238.45
  4. Step 4: Simplify right side
    87,081.17x = 6,636,955,095.68
  5. Step 5: Solve for x
    x = 6,636,955,095.68/87,081.17
  6. Step 6: Final answer
    x = 76,215.74

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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.