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Finding the Fourth Proportional to 108,549.60, 149,743.34 and 74,068.47

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Solution

The fourth proportional to 108,549.60, 149,743.34 and 74,068.47 is: 102,176.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,549.60 : 149,743.34 = 74,068.47 : x
  2. Step 2: Convert to fraction form
    108,549.60/149,743.34 = 74,068.47/x
  3. Step 3: Cross multiply
    108,549.60x = 149,743.34 × 74,068.47
  4. Step 4: Simplify right side
    108,549.60x = 11,091,260,086.49
  5. Step 5: Solve for x
    x = 11,091,260,086.49/108,549.60
  6. Step 6: Final answer
    x = 102,176.89

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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.