Home / 98,927.60-136,540.71-90,957.20

Finding the Fourth Proportional to 98,927.60, 136,540.71 and 90,957.20

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Solution

The fourth proportional to 98,927.60, 136,540.71 and 90,957.20 is: 125,539.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,927.60 : 136,540.71 = 90,957.20 : x
  2. Step 2: Convert to fraction form
    98,927.60/136,540.71 = 90,957.20/x
  3. Step 3: Cross multiply
    98,927.60x = 136,540.71 × 90,957.20
  4. Step 4: Simplify right side
    98,927.60x = 12,419,359,984.91
  5. Step 5: Solve for x
    x = 12,419,359,984.91/98,927.60
  6. Step 6: Final answer
    x = 125,539.90

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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.