Home / 193,909.32-290,706.78-87,215.16

Finding the Fourth Proportional to 193,909.32, 290,706.78 and 87,215.16

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Solution

The fourth proportional to 193,909.32, 290,706.78 and 87,215.16 is: 130,752.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,909.32 : 290,706.78 = 87,215.16 : x
  2. Step 2: Convert to fraction form
    193,909.32/290,706.78 = 87,215.16/x
  3. Step 3: Cross multiply
    193,909.32x = 290,706.78 × 87,215.16
  4. Step 4: Simplify right side
    193,909.32x = 25,354,038,330.78
  5. Step 5: Solve for x
    x = 25,354,038,330.78/193,909.32
  6. Step 6: Final answer
    x = 130,752.04

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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.