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Finding the Fourth Proportional to 135,480.78, 186,961.01 and 75,051.23

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Solution

The fourth proportional to 135,480.78, 186,961.01 and 75,051.23 is: 103,569.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,480.78 : 186,961.01 = 75,051.23 : x
  2. Step 2: Convert to fraction form
    135,480.78/186,961.01 = 75,051.23/x
  3. Step 3: Cross multiply
    135,480.78x = 186,961.01 × 75,051.23
  4. Step 4: Simplify right side
    135,480.78x = 14,031,652,452.48
  5. Step 5: Solve for x
    x = 14,031,652,452.48/135,480.78
  6. Step 6: Final answer
    x = 103,569.32

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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.