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Finding the Fourth Proportional to 108,387.68, 149,524.48 and 70,159.56

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Solution

The fourth proportional to 108,387.68, 149,524.48 and 70,159.56 is: 96,787.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,387.68 : 149,524.48 = 70,159.56 : x
  2. Step 2: Convert to fraction form
    108,387.68/149,524.48 = 70,159.56/x
  3. Step 3: Cross multiply
    108,387.68x = 149,524.48 × 70,159.56
  4. Step 4: Simplify right side
    108,387.68x = 10,490,571,726.03
  5. Step 5: Solve for x
    x = 10,490,571,726.03/108,387.68
  6. Step 6: Final answer
    x = 96,787.49

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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.