Home / 134,788.12-186,005.25-74,364.55

Finding the Fourth Proportional to 134,788.12, 186,005.25 and 74,364.55

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Solution

The fourth proportional to 134,788.12, 186,005.25 and 74,364.55 is: 102,621.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,788.12 : 186,005.25 = 74,364.55 : x
  2. Step 2: Convert to fraction form
    134,788.12/186,005.25 = 74,364.55/x
  3. Step 3: Cross multiply
    134,788.12x = 186,005.25 × 74,364.55
  4. Step 4: Simplify right side
    134,788.12x = 13,832,196,248.87
  5. Step 5: Solve for x
    x = 13,832,196,248.87/134,788.12
  6. Step 6: Final answer
    x = 102,621.78

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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.