Home / 108,131.40-162,002.70-66,529.80

Finding the Fourth Proportional to 108,131.40, 162,002.70 and 66,529.80

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Solution

The fourth proportional to 108,131.40, 162,002.70 and 66,529.80 is: 99,675.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,131.40 : 162,002.70 = 66,529.80 : x
  2. Step 2: Convert to fraction form
    108,131.40/162,002.70 = 66,529.80/x
  3. Step 3: Cross multiply
    108,131.40x = 162,002.70 × 66,529.80
  4. Step 4: Simplify right side
    108,131.40x = 10,778,007,230.46
  5. Step 5: Solve for x
    x = 10,778,007,230.46/108,131.40
  6. Step 6: Final answer
    x = 99,675.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.