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Finding the Fourth Proportional to 126,582, 189,748.80 and 70,449

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Solution

The fourth proportional to 126,582, 189,748.80 and 70,449 is: 105,604.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,582 : 189,748.80 = 70,449 : x
  2. Step 2: Convert to fraction form
    126,582/189,748.80 = 70,449/x
  3. Step 3: Cross multiply
    126,582x = 189,748.80 × 70,449
  4. Step 4: Simplify right side
    126,582x = 13,367,613,211.20
  5. Step 5: Solve for x
    x = 13,367,613,211.20/126,582
  6. Step 6: Final answer
    x = 105,604.38

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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.