Home / 129,219.80-193,949.63-66,085.04

Finding the Fourth Proportional to 129,219.80, 193,949.63 and 66,085.04

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Solution

The fourth proportional to 129,219.80, 193,949.63 and 66,085.04 is: 99,188.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,219.80 : 193,949.63 = 66,085.04 : x
  2. Step 2: Convert to fraction form
    129,219.80/193,949.63 = 66,085.04/x
  3. Step 3: Cross multiply
    129,219.80x = 193,949.63 × 66,085.04
  4. Step 4: Simplify right side
    129,219.80x = 12,817,168,252.00
  5. Step 5: Solve for x
    x = 12,817,168,252.00/129,219.80
  6. Step 6: Final answer
    x = 99,188.89

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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.