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Finding the Fourth Proportional to 168,101.40, 251,892.90 and 145,810.20

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Solution

The fourth proportional to 168,101.40, 251,892.90 and 145,810.20 is: 218,490.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,101.40 : 251,892.90 = 145,810.20 : x
  2. Step 2: Convert to fraction form
    168,101.40/251,892.90 = 145,810.20/x
  3. Step 3: Cross multiply
    168,101.40x = 251,892.90 × 145,810.20
  4. Step 4: Simplify right side
    168,101.40x = 36,728,554,127.58
  5. Step 5: Solve for x
    x = 36,728,554,127.58/168,101.40
  6. Step 6: Final answer
    x = 218,490.47

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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.