Home / 120,084.65-180,126.72-112,777.33

Finding the Fourth Proportional to 120,084.65, 180,126.72 and 112,777.33

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Solution

The fourth proportional to 120,084.65, 180,126.72 and 112,777.33 is: 169,165.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,084.65 : 180,126.72 = 112,777.33 : x
  2. Step 2: Convert to fraction form
    120,084.65/180,126.72 = 112,777.33/x
  3. Step 3: Cross multiply
    120,084.65x = 180,126.72 × 112,777.33
  4. Step 4: Simplify right side
    120,084.65x = 20,314,210,543.26
  5. Step 5: Solve for x
    x = 20,314,210,543.26/120,084.65
  6. Step 6: Final answer
    x = 169,165.76

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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.