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Finding the Fourth Proportional to 98,600.68, 136,298.79 and 87,951.10

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Solution

The fourth proportional to 98,600.68, 136,298.79 and 87,951.10 is: 121,577.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,600.68 : 136,298.79 = 87,951.10 : x
  2. Step 2: Convert to fraction form
    98,600.68/136,298.79 = 87,951.10/x
  3. Step 3: Cross multiply
    98,600.68x = 136,298.79 × 87,951.10
  4. Step 4: Simplify right side
    98,600.68x = 11,987,627,827.68
  5. Step 5: Solve for x
    x = 11,987,627,827.68/98,600.68
  6. Step 6: Final answer
    x = 121,577.54

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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.