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Finding the Fourth Proportional to 119,701.80, 179,552.70 and 84,272.40

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Solution

The fourth proportional to 119,701.80, 179,552.70 and 84,272.40 is: 126,408.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,701.80 : 179,552.70 = 84,272.40 : x
  2. Step 2: Convert to fraction form
    119,701.80/179,552.70 = 84,272.40/x
  3. Step 3: Cross multiply
    119,701.80x = 179,552.70 × 84,272.40
  4. Step 4: Simplify right side
    119,701.80x = 15,131,336,955.48
  5. Step 5: Solve for x
    x = 15,131,336,955.48/119,701.80
  6. Step 6: Final answer
    x = 126,408.60

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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.