Home / 86,316.17-129,302.02-68,576.86

Finding the Fourth Proportional to 86,316.17, 129,302.02 and 68,576.86

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Solution

The fourth proportional to 86,316.17, 129,302.02 and 68,576.86 is: 102,728.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,316.17 : 129,302.02 = 68,576.86 : x
  2. Step 2: Convert to fraction form
    86,316.17/129,302.02 = 68,576.86/x
  3. Step 3: Cross multiply
    86,316.17x = 129,302.02 × 68,576.86
  4. Step 4: Simplify right side
    86,316.17x = 8,867,126,770.61
  5. Step 5: Solve for x
    x = 8,867,126,770.61/86,316.17
  6. Step 6: Final answer
    x = 102,728.46

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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.