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Finding the Fourth Proportional to 98,910, 136,495.80 and 54,197.04

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Solution

The fourth proportional to 98,910, 136,495.80 and 54,197.04 is: 74,791.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,910 : 136,495.80 = 54,197.04 : x
  2. Step 2: Convert to fraction form
    98,910/136,495.80 = 54,197.04/x
  3. Step 3: Cross multiply
    98,910x = 136,495.80 × 54,197.04
  4. Step 4: Simplify right side
    98,910x = 7,397,668,332.43
  5. Step 5: Solve for x
    x = 7,397,668,332.43/98,910
  6. Step 6: Final answer
    x = 74,791.92

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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.