Home / 129,750.12-194,699.06-85,397.76

Finding the Fourth Proportional to 129,750.12, 194,699.06 and 85,397.76

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Solution

The fourth proportional to 129,750.12, 194,699.06 and 85,397.76 is: 128,145.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,750.12 : 194,699.06 = 85,397.76 : x
  2. Step 2: Convert to fraction form
    129,750.12/194,699.06 = 85,397.76/x
  3. Step 3: Cross multiply
    129,750.12x = 194,699.06 × 85,397.76
  4. Step 4: Simplify right side
    129,750.12x = 16,626,863,598.11
  5. Step 5: Solve for x
    x = 16,626,863,598.11/129,750.12
  6. Step 6: Final answer
    x = 128,145.27

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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.