Home / 121,982.81-168,337.13-68,272.79

Finding the Fourth Proportional to 121,982.81, 168,337.13 and 68,272.79

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Solution

The fourth proportional to 121,982.81, 168,337.13 and 68,272.79 is: 94,216.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,982.81 : 168,337.13 = 68,272.79 : x
  2. Step 2: Convert to fraction form
    121,982.81/168,337.13 = 68,272.79/x
  3. Step 3: Cross multiply
    121,982.81x = 168,337.13 × 68,272.79
  4. Step 4: Simplify right side
    121,982.81x = 11,492,845,605.17
  5. Step 5: Solve for x
    x = 11,492,845,605.17/121,982.81
  6. Step 6: Final answer
    x = 94,216.93

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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.