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Finding the Fourth Proportional to 121,101.60, 181,846.80 and 91,552.80

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Solution

The fourth proportional to 121,101.60, 181,846.80 and 91,552.80 is: 137,476.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,101.60 : 181,846.80 = 91,552.80 : x
  2. Step 2: Convert to fraction form
    121,101.60/181,846.80 = 91,552.80/x
  3. Step 3: Cross multiply
    121,101.60x = 181,846.80 × 91,552.80
  4. Step 4: Simplify right side
    121,101.60x = 16,648,583,711.04
  5. Step 5: Solve for x
    x = 16,648,583,711.04/121,101.60
  6. Step 6: Final answer
    x = 137,476.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.