Home / 129,622.60-194,433.90-87,632.20

Finding the Fourth Proportional to 129,622.60, 194,433.90 and 87,632.20

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Solution

The fourth proportional to 129,622.60, 194,433.90 and 87,632.20 is: 131,448.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,622.60 : 194,433.90 = 87,632.20 : x
  2. Step 2: Convert to fraction form
    129,622.60/194,433.90 = 87,632.20/x
  3. Step 3: Cross multiply
    129,622.60x = 194,433.90 × 87,632.20
  4. Step 4: Simplify right side
    129,622.60x = 17,038,670,411.58
  5. Step 5: Solve for x
    x = 17,038,670,411.58/129,622.60
  6. Step 6: Final answer
    x = 131,448.30

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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.