Home / 129,061.53-178,107.26-72,474.93

Finding the Fourth Proportional to 129,061.53, 178,107.26 and 72,474.93

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Solution

The fourth proportional to 129,061.53, 178,107.26 and 72,474.93 is: 100,016.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,061.53 : 178,107.26 = 72,474.93 : x
  2. Step 2: Convert to fraction form
    129,061.53/178,107.26 = 72,474.93/x
  3. Step 3: Cross multiply
    129,061.53x = 178,107.26 × 72,474.93
  4. Step 4: Simplify right side
    129,061.53x = 12,908,310,838.62
  5. Step 5: Solve for x
    x = 12,908,310,838.62/129,061.53
  6. Step 6: Final answer
    x = 100,016.72

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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.