Home / 129,000.30-193,500.45-115,222.20

Finding the Fourth Proportional to 129,000.30, 193,500.45 and 115,222.20

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Solution

The fourth proportional to 129,000.30, 193,500.45 and 115,222.20 is: 172,833.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,000.30 : 193,500.45 = 115,222.20 : x
  2. Step 2: Convert to fraction form
    129,000.30/193,500.45 = 115,222.20/x
  3. Step 3: Cross multiply
    129,000.30x = 193,500.45 × 115,222.20
  4. Step 4: Simplify right side
    129,000.30x = 22,295,547,549.99
  5. Step 5: Solve for x
    x = 22,295,547,549.99/129,000.30
  6. Step 6: Final answer
    x = 172,833.30

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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.