Home / 138,669.02-207,595.29-85,908.86

Finding the Fourth Proportional to 138,669.02, 207,595.29 and 85,908.86

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Solution

The fourth proportional to 138,669.02, 207,595.29 and 85,908.86 is: 128,610.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,669.02 : 207,595.29 = 85,908.86 : x
  2. Step 2: Convert to fraction form
    138,669.02/207,595.29 = 85,908.86/x
  3. Step 3: Cross multiply
    138,669.02x = 207,595.29 × 85,908.86
  4. Step 4: Simplify right side
    138,669.02x = 17,834,274,705.27
  5. Step 5: Solve for x
    x = 17,834,274,705.27/138,669.02
  6. Step 6: Final answer
    x = 128,610.38

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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.