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Finding the Fourth Proportional to 123,353.67, 170,232.21 and 75,597.81

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Solution

The fourth proportional to 123,353.67, 170,232.21 and 75,597.81 is: 104,327.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,353.67 : 170,232.21 = 75,597.81 : x
  2. Step 2: Convert to fraction form
    123,353.67/170,232.21 = 75,597.81/x
  3. Step 3: Cross multiply
    123,353.67x = 170,232.21 × 75,597.81
  4. Step 4: Simplify right side
    123,353.67x = 12,869,182,267.46
  5. Step 5: Solve for x
    x = 12,869,182,267.46/123,353.67
  6. Step 6: Final answer
    x = 104,327.52

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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.