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Finding the Fourth Proportional to 144,017.84, 198,780.20 and 87,476.60

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Solution

The fourth proportional to 144,017.84, 198,780.20 and 87,476.60 is: 120,739.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,017.84 : 198,780.20 = 87,476.60 : x
  2. Step 2: Convert to fraction form
    144,017.84/198,780.20 = 87,476.60/x
  3. Step 3: Cross multiply
    144,017.84x = 198,780.20 × 87,476.60
  4. Step 4: Simplify right side
    144,017.84x = 17,388,614,612.04
  5. Step 5: Solve for x
    x = 17,388,614,612.04/144,017.84
  6. Step 6: Final answer
    x = 120,739.31

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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.