Home / 129,088.16-193,215.60-66,672.80

Finding the Fourth Proportional to 129,088.16, 193,215.60 and 66,672.80

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Solution

The fourth proportional to 129,088.16, 193,215.60 and 66,672.80 is: 99,794.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,088.16 : 193,215.60 = 66,672.80 : x
  2. Step 2: Convert to fraction form
    129,088.16/193,215.60 = 66,672.80/x
  3. Step 3: Cross multiply
    129,088.16x = 193,215.60 × 66,672.80
  4. Step 4: Simplify right side
    129,088.16x = 12,882,225,055.68
  5. Step 5: Solve for x
    x = 12,882,225,055.68/129,088.16
  6. Step 6: Final answer
    x = 99,794.01

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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.