Home / 87,154.80-120,281.76-51,355.92

Finding the Fourth Proportional to 87,154.80, 120,281.76 and 51,355.92

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Solution

The fourth proportional to 87,154.80, 120,281.76 and 51,355.92 is: 70,875.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,154.80 : 120,281.76 = 51,355.92 : x
  2. Step 2: Convert to fraction form
    87,154.80/120,281.76 = 51,355.92/x
  3. Step 3: Cross multiply
    87,154.80x = 120,281.76 × 51,355.92
  4. Step 4: Simplify right side
    87,154.80x = 6,177,180,444.02
  5. Step 5: Solve for x
    x = 6,177,180,444.02/87,154.80
  6. Step 6: Final answer
    x = 70,875.96

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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.