Home / 87,155.80-120,283.14-51,356.92

Finding the Fourth Proportional to 87,155.80, 120,283.14 and 51,356.92

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Solution

The fourth proportional to 87,155.80, 120,283.14 and 51,356.92 is: 70,877.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,155.80 : 120,283.14 = 51,356.92 : x
  2. Step 2: Convert to fraction form
    87,155.80/120,283.14 = 51,356.92/x
  3. Step 3: Cross multiply
    87,155.80x = 120,283.14 × 51,356.92
  4. Step 4: Simplify right side
    87,155.80x = 6,177,371,598.33
  5. Step 5: Solve for x
    x = 6,177,371,598.33/87,155.80
  6. Step 6: Final answer
    x = 70,877.34

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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.