Home / 121,767.20-167,929.93-76,449.41

Finding the Fourth Proportional to 121,767.20, 167,929.93 and 76,449.41

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Solution

The fourth proportional to 121,767.20, 167,929.93 and 76,449.41 is: 105,431.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,767.20 : 167,929.93 = 76,449.41 : x
  2. Step 2: Convert to fraction form
    121,767.20/167,929.93 = 76,449.41/x
  3. Step 3: Cross multiply
    121,767.20x = 167,929.93 × 76,449.41
  4. Step 4: Simplify right side
    121,767.20x = 12,838,144,069.84
  5. Step 5: Solve for x
    x = 12,838,144,069.84/121,767.20
  6. Step 6: Final answer
    x = 105,431.87

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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.