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Finding the Fourth Proportional to 135,339.31, 186,763.49 and 74,910.07

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Solution

The fourth proportional to 135,339.31, 186,763.49 and 74,910.07 is: 103,373.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,339.31 : 186,763.49 = 74,910.07 : x
  2. Step 2: Convert to fraction form
    135,339.31/186,763.49 = 74,910.07/x
  3. Step 3: Cross multiply
    135,339.31x = 186,763.49 × 74,910.07
  4. Step 4: Simplify right side
    135,339.31x = 13,990,465,734.79
  5. Step 5: Solve for x
    x = 13,990,465,734.79/135,339.31
  6. Step 6: Final answer
    x = 103,373.26

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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.