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Finding the Fourth Proportional to 98,665.86, 136,174.97 and 73,340.40

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Solution

The fourth proportional to 98,665.86, 136,174.97 and 73,340.40 is: 101,221.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,665.86 : 136,174.97 = 73,340.40 : x
  2. Step 2: Convert to fraction form
    98,665.86/136,174.97 = 73,340.40/x
  3. Step 3: Cross multiply
    98,665.86x = 136,174.97 × 73,340.40
  4. Step 4: Simplify right side
    98,665.86x = 9,987,126,403.09
  5. Step 5: Solve for x
    x = 9,987,126,403.09/98,665.86
  6. Step 6: Final answer
    x = 101,221.70

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1.5x scale

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.