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Finding the Fourth Proportional to 118,833.61, 163,992.42 and 65,115.19

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Solution

The fourth proportional to 118,833.61, 163,992.42 and 65,115.19 is: 89,860.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,833.61 : 163,992.42 = 65,115.19 : x
  2. Step 2: Convert to fraction form
    118,833.61/163,992.42 = 65,115.19/x
  3. Step 3: Cross multiply
    118,833.61x = 163,992.42 × 65,115.19
  4. Step 4: Simplify right side
    118,833.61x = 10,678,397,974.99
  5. Step 5: Solve for x
    x = 10,678,397,974.99/118,833.61
  6. Step 6: Final answer
    x = 89,860.08

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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.