Home / 138,339.15-207,695.30-88,516.50

Finding the Fourth Proportional to 138,339.15, 207,695.30 and 88,516.50

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Solution

The fourth proportional to 138,339.15, 207,695.30 and 88,516.50 is: 132,894.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,339.15 : 207,695.30 = 88,516.50 : x
  2. Step 2: Convert to fraction form
    138,339.15/207,695.30 = 88,516.50/x
  3. Step 3: Cross multiply
    138,339.15x = 207,695.30 × 88,516.50
  4. Step 4: Simplify right side
    138,339.15x = 18,384,460,579.87
  5. Step 5: Solve for x
    x = 18,384,460,579.87/138,339.15
  6. Step 6: Final answer
    x = 132,894.13

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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.