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Finding the Fourth Proportional to 140,077.61, 193,306.21 and 79,648.26

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Solution

The fourth proportional to 140,077.61, 193,306.21 and 79,648.26 is: 109,914.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,077.61 : 193,306.21 = 79,648.26 : x
  2. Step 2: Convert to fraction form
    140,077.61/193,306.21 = 79,648.26/x
  3. Step 3: Cross multiply
    140,077.61x = 193,306.21 × 79,648.26
  4. Step 4: Simplify right side
    140,077.61x = 15,396,502,661.78
  5. Step 5: Solve for x
    x = 15,396,502,661.78/140,077.61
  6. Step 6: Final answer
    x = 109,914.08

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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.