Home / 230,741.40-318,422.82-130,139.40

Finding the Fourth Proportional to 230,741.40, 318,422.82 and 130,139.40

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Solution

The fourth proportional to 230,741.40, 318,422.82 and 130,139.40 is: 179,592.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,741.40 : 318,422.82 = 130,139.40 : x
  2. Step 2: Convert to fraction form
    230,741.40/318,422.82 = 130,139.40/x
  3. Step 3: Cross multiply
    230,741.40x = 318,422.82 × 130,139.40
  4. Step 4: Simplify right side
    230,741.40x = 41,439,354,741.11
  5. Step 5: Solve for x
    x = 41,439,354,741.11/230,741.40
  6. Step 6: Final answer
    x = 179,592.20

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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.