Home / 230,542.17-318,147.55-128,567.74

Finding the Fourth Proportional to 230,542.17, 318,147.55 and 128,567.74

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Solution

The fourth proportional to 230,542.17, 318,147.55 and 128,567.74 is: 177,423.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,542.17 : 318,147.55 = 128,567.74 : x
  2. Step 2: Convert to fraction form
    230,542.17/318,147.55 = 128,567.74/x
  3. Step 3: Cross multiply
    230,542.17x = 318,147.55 × 128,567.74
  4. Step 4: Simplify right side
    230,542.17x = 40,903,511,490.04
  5. Step 5: Solve for x
    x = 40,903,511,490.04/230,542.17
  6. Step 6: Final answer
    x = 177,423.12

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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.