Home / 138,108.16-207,162.36-59,171.20

Finding the Fourth Proportional to 138,108.16, 207,162.36 and 59,171.20

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Solution

The fourth proportional to 138,108.16, 207,162.36 and 59,171.20 is: 88,756.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,108.16 : 207,162.36 = 59,171.20 : x
  2. Step 2: Convert to fraction form
    138,108.16/207,162.36 = 59,171.20/x
  3. Step 3: Cross multiply
    138,108.16x = 207,162.36 × 59,171.20
  4. Step 4: Simplify right side
    138,108.16x = 12,258,045,436.03
  5. Step 5: Solve for x
    x = 12,258,045,436.03/138,108.16
  6. Step 6: Final answer
    x = 88,756.85

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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.