Home / 129,084.07-178,152.72-72,495.44

Finding the Fourth Proportional to 129,084.07, 178,152.72 and 72,495.44

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Solution

The fourth proportional to 129,084.07, 178,152.72 and 72,495.44 is: 100,053.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,084.07 : 178,152.72 = 72,495.44 : x
  2. Step 2: Convert to fraction form
    129,084.07/178,152.72 = 72,495.44/x
  3. Step 3: Cross multiply
    129,084.07x = 178,152.72 × 72,495.44
  4. Step 4: Simplify right side
    129,084.07x = 12,915,259,461.12
  5. Step 5: Solve for x
    x = 12,915,259,461.12/129,084.07
  6. Step 6: Final answer
    x = 100,053.09

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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.