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Finding the Fourth Proportional to 126,897, 190,348.56 and 42,658.26

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Solution

The fourth proportional to 126,897, 190,348.56 and 42,658.26 is: 63,988.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,897 : 190,348.56 = 42,658.26 : x
  2. Step 2: Convert to fraction form
    126,897/190,348.56 = 42,658.26/x
  3. Step 3: Cross multiply
    126,897x = 190,348.56 × 42,658.26
  4. Step 4: Simplify right side
    126,897x = 8,119,938,363.11
  5. Step 5: Solve for x
    x = 8,119,938,363.11/126,897
  6. Step 6: Final answer
    x = 63,988.42

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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.