Home / 138,372.89-207,420.65-54,017.06

Finding the Fourth Proportional to 138,372.89, 207,420.65 and 54,017.06

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Solution

The fourth proportional to 138,372.89, 207,420.65 and 54,017.06 is: 80,971.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,372.89 : 207,420.65 = 54,017.06 : x
  2. Step 2: Convert to fraction form
    138,372.89/207,420.65 = 54,017.06/x
  3. Step 3: Cross multiply
    138,372.89x = 207,420.65 × 54,017.06
  4. Step 4: Simplify right side
    138,372.89x = 11,204,253,426.20
  5. Step 5: Solve for x
    x = 11,204,253,426.20/138,372.89
  6. Step 6: Final answer
    x = 80,971.45

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1.5x scale

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.