Home / 194,142.10-291,213.15-115,215.70

Finding the Fourth Proportional to 194,142.10, 291,213.15 and 115,215.70

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Solution

The fourth proportional to 194,142.10, 291,213.15 and 115,215.70 is: 172,823.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,142.10 : 291,213.15 = 115,215.70 : x
  2. Step 2: Convert to fraction form
    194,142.10/291,213.15 = 115,215.70/x
  3. Step 3: Cross multiply
    194,142.10x = 291,213.15 × 115,215.70
  4. Step 4: Simplify right side
    194,142.10x = 33,552,326,926.46
  5. Step 5: Solve for x
    x = 33,552,326,926.46/194,142.10
  6. Step 6: Final answer
    x = 172,823.55

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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.