Home / 130,793.72-180,151.56-100,521.12

Finding the Fourth Proportional to 130,793.72, 180,151.56 and 100,521.12

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Solution

The fourth proportional to 130,793.72, 180,151.56 and 100,521.12 is: 138,454.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,793.72 : 180,151.56 = 100,521.12 : x
  2. Step 2: Convert to fraction form
    130,793.72/180,151.56 = 100,521.12/x
  3. Step 3: Cross multiply
    130,793.72x = 180,151.56 × 100,521.12
  4. Step 4: Simplify right side
    130,793.72x = 18,109,036,580.95
  5. Step 5: Solve for x
    x = 18,109,036,580.95/130,793.72
  6. Step 6: Final answer
    x = 138,454.94

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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.