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Finding the Fourth Proportional to 108,658.02, 150,034.77 and 72,878.70

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Solution

The fourth proportional to 108,658.02, 150,034.77 and 72,878.70 is: 100,630.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,658.02 : 150,034.77 = 72,878.70 : x
  2. Step 2: Convert to fraction form
    108,658.02/150,034.77 = 72,878.70/x
  3. Step 3: Cross multiply
    108,658.02x = 150,034.77 × 72,878.70
  4. Step 4: Simplify right side
    108,658.02x = 10,934,338,992.40
  5. Step 5: Solve for x
    x = 10,934,338,992.40/108,658.02
  6. Step 6: Final answer
    x = 100,630.76

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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.