Home / 194,622.90-291,934.35-128,138.10

Finding the Fourth Proportional to 194,622.90, 291,934.35 and 128,138.10

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Solution

The fourth proportional to 194,622.90, 291,934.35 and 128,138.10 is: 192,207.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,622.90 : 291,934.35 = 128,138.10 : x
  2. Step 2: Convert to fraction form
    194,622.90/291,934.35 = 128,138.10/x
  3. Step 3: Cross multiply
    194,622.90x = 291,934.35 × 128,138.10
  4. Step 4: Simplify right side
    194,622.90x = 37,407,912,933.74
  5. Step 5: Solve for x
    x = 37,407,912,933.74/194,622.90
  6. Step 6: Final answer
    x = 192,207.15

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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.