Home / 86,425.45-129,436.76-83,432.23

Finding the Fourth Proportional to 86,425.45, 129,436.76 and 83,432.23

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Solution

The fourth proportional to 86,425.45, 129,436.76 and 83,432.23 is: 124,953.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,425.45 : 129,436.76 = 83,432.23 : x
  2. Step 2: Convert to fraction form
    86,425.45/129,436.76 = 83,432.23/x
  3. Step 3: Cross multiply
    86,425.45x = 129,436.76 × 83,432.23
  4. Step 4: Simplify right side
    86,425.45x = 10,799,197,113.61
  5. Step 5: Solve for x
    x = 10,799,197,113.61/86,425.45
  6. Step 6: Final answer
    x = 124,953.90

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1.5x scale

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.