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Finding the Fourth Proportional to 135,319.88, 186,744.15 and 74,888.97

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Solution

The fourth proportional to 135,319.88, 186,744.15 and 74,888.97 is: 103,348.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,319.88 : 186,744.15 = 74,888.97 : x
  2. Step 2: Convert to fraction form
    135,319.88/186,744.15 = 74,888.97/x
  3. Step 3: Cross multiply
    135,319.88x = 186,744.15 × 74,888.97
  4. Step 4: Simplify right side
    135,319.88x = 13,985,077,047.03
  5. Step 5: Solve for x
    x = 13,985,077,047.03/135,319.88
  6. Step 6: Final answer
    x = 103,348.29

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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.