Home / 120,691.52-180,983.82-64,518.02

Finding the Fourth Proportional to 120,691.52, 180,983.82 and 64,518.02

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Solution

The fourth proportional to 120,691.52, 180,983.82 and 64,518.02 is: 96,748.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,691.52 : 180,983.82 = 64,518.02 : x
  2. Step 2: Convert to fraction form
    120,691.52/180,983.82 = 64,518.02/x
  3. Step 3: Cross multiply
    120,691.52x = 180,983.82 × 64,518.02
  4. Step 4: Simplify right side
    120,691.52x = 11,676,717,718.44
  5. Step 5: Solve for x
    x = 11,676,717,718.44/120,691.52
  6. Step 6: Final answer
    x = 96,748.45

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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.