Home / 132,347.90-198,505.44-78,344.72

Finding the Fourth Proportional to 132,347.90, 198,505.44 and 78,344.72

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Solution

The fourth proportional to 132,347.90, 198,505.44 and 78,344.72 is: 117,507.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,347.90 : 198,505.44 = 78,344.72 : x
  2. Step 2: Convert to fraction form
    132,347.90/198,505.44 = 78,344.72/x
  3. Step 3: Cross multiply
    132,347.90x = 198,505.44 × 78,344.72
  4. Step 4: Simplify right side
    132,347.90x = 15,551,852,867.15
  5. Step 5: Solve for x
    x = 15,551,852,867.15/132,347.90
  6. Step 6: Final answer
    x = 117,507.36

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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.