Home / 120,888.14-166,756.10-75,487.30

Finding the Fourth Proportional to 120,888.14, 166,756.10 and 75,487.30

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Solution

The fourth proportional to 120,888.14, 166,756.10 and 75,487.30 is: 104,129.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,888.14 : 166,756.10 = 75,487.30 : x
  2. Step 2: Convert to fraction form
    120,888.14/166,756.10 = 75,487.30/x
  3. Step 3: Cross multiply
    120,888.14x = 166,756.10 × 75,487.30
  4. Step 4: Simplify right side
    120,888.14x = 12,587,967,747.53
  5. Step 5: Solve for x
    x = 12,587,967,747.53/120,888.14
  6. Step 6: Final answer
    x = 104,129.05

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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.