Home / 121,788.36-167,959.08-76,470.66

Finding the Fourth Proportional to 121,788.36, 167,959.08 and 76,470.66

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Solution

The fourth proportional to 121,788.36, 167,959.08 and 76,470.66 is: 105,461.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,788.36 : 167,959.08 = 76,470.66 : x
  2. Step 2: Convert to fraction form
    121,788.36/167,959.08 = 76,470.66/x
  3. Step 3: Cross multiply
    121,788.36x = 167,959.08 × 76,470.66
  4. Step 4: Simplify right side
    121,788.36x = 12,843,941,700.59
  5. Step 5: Solve for x
    x = 12,843,941,700.59/121,788.36
  6. Step 6: Final answer
    x = 105,461.16

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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.