Home / 136,630.90-204,946.35-80,643.70

Finding the Fourth Proportional to 136,630.90, 204,946.35 and 80,643.70

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Solution

The fourth proportional to 136,630.90, 204,946.35 and 80,643.70 is: 120,965.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,630.90 : 204,946.35 = 80,643.70 : x
  2. Step 2: Convert to fraction form
    136,630.90/204,946.35 = 80,643.70/x
  3. Step 3: Cross multiply
    136,630.90x = 204,946.35 × 80,643.70
  4. Step 4: Simplify right side
    136,630.90x = 16,527,631,965.50
  5. Step 5: Solve for x
    x = 16,527,631,965.50/136,630.90
  6. Step 6: Final answer
    x = 120,965.55

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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.