Home / 136,230.60-187,970.08-79,631.04

Finding the Fourth Proportional to 136,230.60, 187,970.08 and 79,631.04

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Solution

The fourth proportional to 136,230.60, 187,970.08 and 79,631.04 is: 109,874.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,230.60 : 187,970.08 = 79,631.04 : x
  2. Step 2: Convert to fraction form
    136,230.60/187,970.08 = 79,631.04/x
  3. Step 3: Cross multiply
    136,230.60x = 187,970.08 × 79,631.04
  4. Step 4: Simplify right side
    136,230.60x = 14,968,252,959.28
  5. Step 5: Solve for x
    x = 14,968,252,959.28/136,230.60
  6. Step 6: Final answer
    x = 109,874.38

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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.