Home / 130,876.20-180,610.02-74,288.52

Finding the Fourth Proportional to 130,876.20, 180,610.02 and 74,288.52

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Solution

The fourth proportional to 130,876.20, 180,610.02 and 74,288.52 is: 102,518.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,876.20 : 180,610.02 = 74,288.52 : x
  2. Step 2: Convert to fraction form
    130,876.20/180,610.02 = 74,288.52/x
  3. Step 3: Cross multiply
    130,876.20x = 180,610.02 × 74,288.52
  4. Step 4: Simplify right side
    130,876.20x = 13,417,251,082.97
  5. Step 5: Solve for x
    x = 13,417,251,082.97/130,876.20
  6. Step 6: Final answer
    x = 102,518.65

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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.