Home / 87,154.05-120,280.50-51,326.13

Finding the Fourth Proportional to 87,154.05, 120,280.50 and 51,326.13

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Solution

The fourth proportional to 87,154.05, 120,280.50 and 51,326.13 is: 70,834.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,154.05 : 120,280.50 = 51,326.13 : x
  2. Step 2: Convert to fraction form
    87,154.05/120,280.50 = 51,326.13/x
  3. Step 3: Cross multiply
    87,154.05x = 120,280.50 × 51,326.13
  4. Step 4: Simplify right side
    87,154.05x = 6,173,532,579.47
  5. Step 5: Solve for x
    x = 6,173,532,579.47/87,154.05
  6. Step 6: Final answer
    x = 70,834.72

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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.