Home / 129,084.93-178,153.92-72,496.32

Finding the Fourth Proportional to 129,084.93, 178,153.92 and 72,496.32

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Solution

The fourth proportional to 129,084.93, 178,153.92 and 72,496.32 is: 100,054.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,084.93 : 178,153.92 = 72,496.32 : x
  2. Step 2: Convert to fraction form
    129,084.93/178,153.92 = 72,496.32/x
  3. Step 3: Cross multiply
    129,084.93x = 178,153.92 × 72,496.32
  4. Step 4: Simplify right side
    129,084.93x = 12,915,503,593.57
  5. Step 5: Solve for x
    x = 12,915,503,593.57/129,084.93
  6. Step 6: Final answer
    x = 100,054.31

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1.5x scale

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.