Home / 125,322.40-187,983.60-80,999.20

Finding the Fourth Proportional to 125,322.40, 187,983.60 and 80,999.20

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Solution

The fourth proportional to 125,322.40, 187,983.60 and 80,999.20 is: 121,498.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,322.40 : 187,983.60 = 80,999.20 : x
  2. Step 2: Convert to fraction form
    125,322.40/187,983.60 = 80,999.20/x
  3. Step 3: Cross multiply
    125,322.40x = 187,983.60 × 80,999.20
  4. Step 4: Simplify right side
    125,322.40x = 15,226,521,213.12
  5. Step 5: Solve for x
    x = 15,226,521,213.12/125,322.40
  6. Step 6: Final answer
    x = 121,498.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.