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Finding the Fourth Proportional to 144,988.60, 218,066.10 and 129,825.40

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Solution

The fourth proportional to 144,988.60, 218,066.10 and 129,825.40 is: 195,260.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,988.60 : 218,066.10 = 129,825.40 : x
  2. Step 2: Convert to fraction form
    144,988.60/218,066.10 = 129,825.40/x
  3. Step 3: Cross multiply
    144,988.60x = 218,066.10 × 129,825.40
  4. Step 4: Simplify right side
    144,988.60x = 28,310,518,658.94
  5. Step 5: Solve for x
    x = 28,310,518,658.94/144,988.60
  6. Step 6: Final answer
    x = 195,260.31

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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.