Home / 155,929.44-215,195.20-87,942.88

Finding the Fourth Proportional to 155,929.44, 215,195.20 and 87,942.88

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Solution

The fourth proportional to 155,929.44, 215,195.20 and 87,942.88 is: 121,368.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,929.44 : 215,195.20 = 87,942.88 : x
  2. Step 2: Convert to fraction form
    155,929.44/215,195.20 = 87,942.88/x
  3. Step 3: Cross multiply
    155,929.44x = 215,195.20 × 87,942.88
  4. Step 4: Simplify right side
    155,929.44x = 18,924,885,650.18
  5. Step 5: Solve for x
    x = 18,924,885,650.18/155,929.44
  6. Step 6: Final answer
    x = 121,368.27

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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.