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Finding the Fourth Proportional to 144,038.96, 198,773.32 and 80,376.08

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Solution

The fourth proportional to 144,038.96, 198,773.32 and 80,376.08 is: 110,918.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,038.96 : 198,773.32 = 80,376.08 : x
  2. Step 2: Convert to fraction form
    144,038.96/198,773.32 = 80,376.08/x
  3. Step 3: Cross multiply
    144,038.96x = 198,773.32 × 80,376.08
  4. Step 4: Simplify right side
    144,038.96x = 15,976,620,270.19
  5. Step 5: Solve for x
    x = 15,976,620,270.19/144,038.96
  6. Step 6: Final answer
    x = 110,918.74

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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.