Home / 128,001.20-191,742.60-88,602.80

Finding the Fourth Proportional to 128,001.20, 191,742.60 and 88,602.80

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Solution

The fourth proportional to 128,001.20, 191,742.60 and 88,602.80 is: 132,724.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,001.20 : 191,742.60 = 88,602.80 : x
  2. Step 2: Convert to fraction form
    128,001.20/191,742.60 = 88,602.80/x
  3. Step 3: Cross multiply
    128,001.20x = 191,742.60 × 88,602.80
  4. Step 4: Simplify right side
    128,001.20x = 16,988,931,239.28
  5. Step 5: Solve for x
    x = 16,988,931,239.28/128,001.20
  6. Step 6: Final answer
    x = 132,724.78

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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.