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Finding the Fourth Proportional to 144,040.32, 198,775.35 and 80,374.32

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Solution

The fourth proportional to 144,040.32, 198,775.35 and 80,374.32 is: 110,916.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,040.32 : 198,775.35 = 80,374.32 : x
  2. Step 2: Convert to fraction form
    144,040.32/198,775.35 = 80,374.32/x
  3. Step 3: Cross multiply
    144,040.32x = 198,775.35 × 80,374.32
  4. Step 4: Simplify right side
    144,040.32x = 15,976,433,589.01
  5. Step 5: Solve for x
    x = 15,976,433,589.01/144,040.32
  6. Step 6: Final answer
    x = 110,916.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.