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Finding the Fourth Proportional to 131,998, 182,239.56 and 91,698.16

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Solution

The fourth proportional to 131,998, 182,239.56 and 91,698.16 is: 126,600.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,998 : 182,239.56 = 91,698.16 : x
  2. Step 2: Convert to fraction form
    131,998/182,239.56 = 91,698.16/x
  3. Step 3: Cross multiply
    131,998x = 182,239.56 × 91,698.16
  4. Step 4: Simplify right side
    131,998x = 16,711,032,331.21
  5. Step 5: Solve for x
    x = 16,711,032,331.21/131,998
  6. Step 6: Final answer
    x = 126,600.65

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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.