Home / 129,036.40-193,650.60-66,674.80

Finding the Fourth Proportional to 129,036.40, 193,650.60 and 66,674.80

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Solution

The fourth proportional to 129,036.40, 193,650.60 and 66,674.80 is: 100,061.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,036.40 : 193,650.60 = 66,674.80 : x
  2. Step 2: Convert to fraction form
    129,036.40/193,650.60 = 66,674.80/x
  3. Step 3: Cross multiply
    129,036.40x = 193,650.60 × 66,674.80
  4. Step 4: Simplify right side
    129,036.40x = 12,911,615,024.88
  5. Step 5: Solve for x
    x = 12,911,615,024.88/129,036.40
  6. Step 6: Final answer
    x = 100,061.80

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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.