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Finding the Fourth Proportional to 118,230.38, 163,115.29 and 91,014.79

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Solution

The fourth proportional to 118,230.38, 163,115.29 and 91,014.79 is: 125,567.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,230.38 : 163,115.29 = 91,014.79 : x
  2. Step 2: Convert to fraction form
    118,230.38/163,115.29 = 91,014.79/x
  3. Step 3: Cross multiply
    118,230.38x = 163,115.29 × 91,014.79
  4. Step 4: Simplify right side
    118,230.38x = 14,845,904,132.94
  5. Step 5: Solve for x
    x = 14,845,904,132.94/118,230.38
  6. Step 6: Final answer
    x = 125,567.59

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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.