Home / 121,864.50-168,171.59-68,149.01

Finding the Fourth Proportional to 121,864.50, 168,171.59 and 68,149.01

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Solution

The fourth proportional to 121,864.50, 168,171.59 and 68,149.01 is: 94,044.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,864.50 : 168,171.59 = 68,149.01 : x
  2. Step 2: Convert to fraction form
    121,864.50/168,171.59 = 68,149.01/x
  3. Step 3: Cross multiply
    121,864.50x = 168,171.59 × 68,149.01
  4. Step 4: Simplify right side
    121,864.50x = 11,460,727,959.43
  5. Step 5: Solve for x
    x = 11,460,727,959.43/121,864.50
  6. Step 6: Final answer
    x = 94,044.84

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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.