Home / 121,882.28-168,167.22-76,567.64

Finding the Fourth Proportional to 121,882.28, 168,167.22 and 76,567.64

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Solution

The fourth proportional to 121,882.28, 168,167.22 and 76,567.64 is: 105,644.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,882.28 : 168,167.22 = 76,567.64 : x
  2. Step 2: Convert to fraction form
    121,882.28/168,167.22 = 76,567.64/x
  3. Step 3: Cross multiply
    121,882.28x = 168,167.22 × 76,567.64
  4. Step 4: Simplify right side
    121,882.28x = 12,876,167,160.76
  5. Step 5: Solve for x
    x = 12,876,167,160.76/121,882.28
  6. Step 6: Final answer
    x = 105,644.29

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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.