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Finding the Fourth Proportional to 126,710.10, 174,658.92 and 99,810

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Solution

The fourth proportional to 126,710.10, 174,658.92 and 99,810 is: 137,579.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,710.10 : 174,658.92 = 99,810 : x
  2. Step 2: Convert to fraction form
    126,710.10/174,658.92 = 99,810/x
  3. Step 3: Cross multiply
    126,710.10x = 174,658.92 × 99,810
  4. Step 4: Simplify right side
    126,710.10x = 17,432,706,805.20
  5. Step 5: Solve for x
    x = 17,432,706,805.20/126,710.10
  6. Step 6: Final answer
    x = 137,579.46

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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.