Home / 129,509.08-193,904.91-66,192.85

Finding the Fourth Proportional to 129,509.08, 193,904.91 and 66,192.85

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Solution

The fourth proportional to 129,509.08, 193,904.91 and 66,192.85 is: 99,105.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,509.08 : 193,904.91 = 66,192.85 : x
  2. Step 2: Convert to fraction form
    129,509.08/193,904.91 = 66,192.85/x
  3. Step 3: Cross multiply
    129,509.08x = 193,904.91 × 66,192.85
  4. Step 4: Simplify right side
    129,509.08x = 12,835,117,959.73
  5. Step 5: Solve for x
    x = 12,835,117,959.73/129,509.08
  6. Step 6: Final answer
    x = 99,105.93

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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.