Home / 129,182.04-178,269.66-72,603

Finding the Fourth Proportional to 129,182.04, 178,269.66 and 72,603

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Solution

The fourth proportional to 129,182.04, 178,269.66 and 72,603 is: 100,191.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,182.04 : 178,269.66 = 72,603 : x
  2. Step 2: Convert to fraction form
    129,182.04/178,269.66 = 72,603/x
  3. Step 3: Cross multiply
    129,182.04x = 178,269.66 × 72,603
  4. Step 4: Simplify right side
    129,182.04x = 12,942,912,124.98
  5. Step 5: Solve for x
    x = 12,942,912,124.98/129,182.04
  6. Step 6: Final answer
    x = 100,191.27

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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.