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Finding the Fourth Proportional to 121,329.88, 182,030.98 and 87,671.96

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Solution

The fourth proportional to 121,329.88, 182,030.98 and 87,671.96 is: 131,534.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,329.88 : 182,030.98 = 87,671.96 : x
  2. Step 2: Convert to fraction form
    121,329.88/182,030.98 = 87,671.96/x
  3. Step 3: Cross multiply
    121,329.88x = 182,030.98 × 87,671.96
  4. Step 4: Simplify right side
    121,329.88x = 15,959,012,797.32
  5. Step 5: Solve for x
    x = 15,959,012,797.32/121,329.88
  6. Step 6: Final answer
    x = 131,534.07

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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.