Home / 121,654.58-167,989.02-76,411.22

Finding the Fourth Proportional to 121,654.58, 167,989.02 and 76,411.22

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Solution

The fourth proportional to 121,654.58, 167,989.02 and 76,411.22 is: 105,513.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,654.58 : 167,989.02 = 76,411.22 : x
  2. Step 2: Convert to fraction form
    121,654.58/167,989.02 = 76,411.22/x
  3. Step 3: Cross multiply
    121,654.58x = 167,989.02 × 76,411.22
  4. Step 4: Simplify right side
    121,654.58x = 12,836,245,964.80
  5. Step 5: Solve for x
    x = 12,836,245,964.80/121,654.58
  6. Step 6: Final answer
    x = 105,513.87

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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.