Home / 83,510.40-125,557.20-81,760.80

Finding the Fourth Proportional to 83,510.40, 125,557.20 and 81,760.80

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Solution

The fourth proportional to 83,510.40, 125,557.20 and 81,760.80 is: 122,926.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,510.40 : 125,557.20 = 81,760.80 : x
  2. Step 2: Convert to fraction form
    83,510.40/125,557.20 = 81,760.80/x
  3. Step 3: Cross multiply
    83,510.40x = 125,557.20 × 81,760.80
  4. Step 4: Simplify right side
    83,510.40x = 10,265,657,117.76
  5. Step 5: Solve for x
    x = 10,265,657,117.76/83,510.40
  6. Step 6: Final answer
    x = 122,926.69

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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.