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Finding the Fourth Proportional to 98,658.51, 136,149.02 and 62,840.85

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Solution

The fourth proportional to 98,658.51, 136,149.02 and 62,840.85 is: 86,720.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,658.51 : 136,149.02 = 62,840.85 : x
  2. Step 2: Convert to fraction form
    98,658.51/136,149.02 = 62,840.85/x
  3. Step 3: Cross multiply
    98,658.51x = 136,149.02 × 62,840.85
  4. Step 4: Simplify right side
    98,658.51x = 8,555,720,143.47
  5. Step 5: Solve for x
    x = 8,555,720,143.47/98,658.51
  6. Step 6: Final answer
    x = 86,720.55

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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.