Home / 121,864.16-168,177.12-68,149.04

Finding the Fourth Proportional to 121,864.16, 168,177.12 and 68,149.04

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Solution

The fourth proportional to 121,864.16, 168,177.12 and 68,149.04 is: 94,048.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,864.16 : 168,177.12 = 68,149.04 : x
  2. Step 2: Convert to fraction form
    121,864.16/168,177.12 = 68,149.04/x
  3. Step 3: Cross multiply
    121,864.16x = 168,177.12 × 68,149.04
  4. Step 4: Simplify right side
    121,864.16x = 11,461,109,277.96
  5. Step 5: Solve for x
    x = 11,461,109,277.96/121,864.16
  6. Step 6: Final answer
    x = 94,048.24

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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.