Home / 231,149.12-318,992.10-130,547.12

Finding the Fourth Proportional to 231,149.12, 318,992.10 and 130,547.12

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Solution

The fourth proportional to 231,149.12, 318,992.10 and 130,547.12 is: 180,158.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,149.12 : 318,992.10 = 130,547.12 : x
  2. Step 2: Convert to fraction form
    231,149.12/318,992.10 = 130,547.12/x
  3. Step 3: Cross multiply
    231,149.12x = 318,992.10 × 130,547.12
  4. Step 4: Simplify right side
    231,149.12x = 41,643,499,957.75
  5. Step 5: Solve for x
    x = 41,643,499,957.75/231,149.12
  6. Step 6: Final answer
    x = 180,158.59

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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.