Home / 138,352.77-207,060.05-85,078.22

Finding the Fourth Proportional to 138,352.77, 207,060.05 and 85,078.22

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Solution

The fourth proportional to 138,352.77, 207,060.05 and 85,078.22 is: 127,328.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,352.77 : 207,060.05 = 85,078.22 : x
  2. Step 2: Convert to fraction form
    138,352.77/207,060.05 = 85,078.22/x
  3. Step 3: Cross multiply
    138,352.77x = 207,060.05 × 85,078.22
  4. Step 4: Simplify right side
    138,352.77x = 17,616,299,026.42
  5. Step 5: Solve for x
    x = 17,616,299,026.42/138,352.77
  6. Step 6: Final answer
    x = 127,328.85

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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.