Home / 134,780.64-185,938.08-81,034.56

Finding the Fourth Proportional to 134,780.64, 185,938.08 and 81,034.56

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Solution

The fourth proportional to 134,780.64, 185,938.08 and 81,034.56 is: 111,792.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,780.64 : 185,938.08 = 81,034.56 : x
  2. Step 2: Convert to fraction form
    134,780.64/185,938.08 = 81,034.56/x
  3. Step 3: Cross multiply
    134,780.64x = 185,938.08 × 81,034.56
  4. Step 4: Simplify right side
    134,780.64x = 15,067,410,500.04
  5. Step 5: Solve for x
    x = 15,067,410,500.04/134,780.64
  6. Step 6: Final answer
    x = 111,792.10

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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.