Home / 120,729.96-166,667.28-75,433.08

Finding the Fourth Proportional to 120,729.96, 166,667.28 and 75,433.08

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Solution

The fourth proportional to 120,729.96, 166,667.28 and 75,433.08 is: 104,135.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,729.96 : 166,667.28 = 75,433.08 : x
  2. Step 2: Convert to fraction form
    120,729.96/166,667.28 = 75,433.08/x
  3. Step 3: Cross multiply
    120,729.96x = 166,667.28 × 75,433.08
  4. Step 4: Simplify right side
    120,729.96x = 12,572,226,265.62
  5. Step 5: Solve for x
    x = 12,572,226,265.62/120,729.96
  6. Step 6: Final answer
    x = 104,135.10

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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.