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Finding the Fourth Proportional to 139,543.74, 192,575.43 and 79,939.26

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Solution

The fourth proportional to 139,543.74, 192,575.43 and 79,939.26 is: 110,319.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,543.74 : 192,575.43 = 79,939.26 : x
  2. Step 2: Convert to fraction form
    139,543.74/192,575.43 = 79,939.26/x
  3. Step 3: Cross multiply
    139,543.74x = 192,575.43 × 79,939.26
  4. Step 4: Simplify right side
    139,543.74x = 15,394,337,368.38
  5. Step 5: Solve for x
    x = 15,394,337,368.38/139,543.74
  6. Step 6: Final answer
    x = 110,319.08

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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.