Home / 135,005.31-186,306.57-74,580.12

Finding the Fourth Proportional to 135,005.31, 186,306.57 and 74,580.12

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Solution

The fourth proportional to 135,005.31, 186,306.57 and 74,580.12 is: 102,920.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,005.31 : 186,306.57 = 74,580.12 : x
  2. Step 2: Convert to fraction form
    135,005.31/186,306.57 = 74,580.12/x
  3. Step 3: Cross multiply
    135,005.31x = 186,306.57 × 74,580.12
  4. Step 4: Simplify right side
    135,005.31x = 13,894,766,347.39
  5. Step 5: Solve for x
    x = 13,894,766,347.39/135,005.31
  6. Step 6: Final answer
    x = 102,920.15

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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.