Home / 134,856.20-202,221.72-78,712.47

Finding the Fourth Proportional to 134,856.20, 202,221.72 and 78,712.47

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Solution

The fourth proportional to 134,856.20, 202,221.72 and 78,712.47 is: 118,032.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,856.20 : 202,221.72 = 78,712.47 : x
  2. Step 2: Convert to fraction form
    134,856.20/202,221.72 = 78,712.47/x
  3. Step 3: Cross multiply
    134,856.20x = 202,221.72 × 78,712.47
  4. Step 4: Simplify right side
    134,856.20x = 15,917,371,068.85
  5. Step 5: Solve for x
    x = 15,917,371,068.85/134,856.20
  6. Step 6: Final answer
    x = 118,032.18

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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.