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Finding the Fourth Proportional to 168,001.40, 251,742.90 and 145,710.20

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Solution

The fourth proportional to 168,001.40, 251,742.90 and 145,710.20 is: 218,340.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,001.40 : 251,742.90 = 145,710.20 : x
  2. Step 2: Convert to fraction form
    168,001.40/251,742.90 = 145,710.20/x
  3. Step 3: Cross multiply
    168,001.40x = 251,742.90 × 145,710.20
  4. Step 4: Simplify right side
    168,001.40x = 36,681,508,307.58
  5. Step 5: Solve for x
    x = 36,681,508,307.58/168,001.40
  6. Step 6: Final answer
    x = 218,340.49

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1.5x scale

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.