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Finding the Fourth Proportional to 123,903.96, 170,988.12 and 67,315.44

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Solution

The fourth proportional to 123,903.96, 170,988.12 and 67,315.44 is: 92,895.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,903.96 : 170,988.12 = 67,315.44 : x
  2. Step 2: Convert to fraction form
    123,903.96/170,988.12 = 67,315.44/x
  3. Step 3: Cross multiply
    123,903.96x = 170,988.12 × 67,315.44
  4. Step 4: Simplify right side
    123,903.96x = 11,510,140,532.57
  5. Step 5: Solve for x
    x = 11,510,140,532.57/123,903.96
  6. Step 6: Final answer
    x = 92,895.66

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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.