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Finding the Fourth Proportional to 135,683.78, 187,221.19 and 75,244.82

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Solution

The fourth proportional to 135,683.78, 187,221.19 and 75,244.82 is: 103,825.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,683.78 : 187,221.19 = 75,244.82 : x
  2. Step 2: Convert to fraction form
    135,683.78/187,221.19 = 75,244.82/x
  3. Step 3: Cross multiply
    135,683.78x = 187,221.19 × 75,244.82
  4. Step 4: Simplify right side
    135,683.78x = 14,087,424,741.74
  5. Step 5: Solve for x
    x = 14,087,424,741.74/135,683.78
  6. Step 6: Final answer
    x = 103,825.41

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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.