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Finding the Fourth Proportional to 144,080.39, 198,812.59 and 80,420.87

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Solution

The fourth proportional to 144,080.39, 198,812.59 and 80,420.87 is: 110,970.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,080.39 : 198,812.59 = 80,420.87 : x
  2. Step 2: Convert to fraction form
    144,080.39/198,812.59 = 80,420.87/x
  3. Step 3: Cross multiply
    144,080.39x = 198,812.59 × 80,420.87
  4. Step 4: Simplify right side
    144,080.39x = 15,988,680,058.59
  5. Step 5: Solve for x
    x = 15,988,680,058.59/144,080.39
  6. Step 6: Final answer
    x = 110,970.55

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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.