Home / 90,659.20-136,001.60-28,323.20

Finding the Fourth Proportional to 90,659.20, 136,001.60 and 28,323.20

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Solution

The fourth proportional to 90,659.20, 136,001.60 and 28,323.20 is: 42,488.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,659.20 : 136,001.60 = 28,323.20 : x
  2. Step 2: Convert to fraction form
    90,659.20/136,001.60 = 28,323.20/x
  3. Step 3: Cross multiply
    90,659.20x = 136,001.60 × 28,323.20
  4. Step 4: Simplify right side
    90,659.20x = 3,852,000,517.12
  5. Step 5: Solve for x
    x = 3,852,000,517.12/90,659.20
  6. Step 6: Final answer
    x = 42,488.80

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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.