Home / 83,129.06-114,476.48-72,222.15

Finding the Fourth Proportional to 83,129.06, 114,476.48 and 72,222.15

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Solution

The fourth proportional to 83,129.06, 114,476.48 and 72,222.15 is: 99,456.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,129.06 : 114,476.48 = 72,222.15 : x
  2. Step 2: Convert to fraction form
    83,129.06/114,476.48 = 72,222.15/x
  3. Step 3: Cross multiply
    83,129.06x = 114,476.48 × 72,222.15
  4. Step 4: Simplify right side
    83,129.06x = 8,267,737,148.92
  5. Step 5: Solve for x
    x = 8,267,737,148.92/83,129.06
  6. Step 6: Final answer
    x = 99,456.65

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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.