Home / 129,103.76-178,197.02-72,533.36

Finding the Fourth Proportional to 129,103.76, 178,197.02 and 72,533.36

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Solution

The fourth proportional to 129,103.76, 178,197.02 and 72,533.36 is: 100,115.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,103.76 : 178,197.02 = 72,533.36 : x
  2. Step 2: Convert to fraction form
    129,103.76/178,197.02 = 72,533.36/x
  3. Step 3: Cross multiply
    129,103.76x = 178,197.02 × 72,533.36
  4. Step 4: Simplify right side
    129,103.76x = 12,925,227,348.94
  5. Step 5: Solve for x
    x = 12,925,227,348.94/129,103.76
  6. Step 6: Final answer
    x = 100,115.04

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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.