Home / 129,192.99-178,373.31-115,538.61

Finding the Fourth Proportional to 129,192.99, 178,373.31 and 115,538.61

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Solution

The fourth proportional to 129,192.99, 178,373.31 and 115,538.61 is: 159,521.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,192.99 : 178,373.31 = 115,538.61 : x
  2. Step 2: Convert to fraction form
    129,192.99/178,373.31 = 115,538.61/x
  3. Step 3: Cross multiply
    129,192.99x = 178,373.31 × 115,538.61
  4. Step 4: Simplify right side
    129,192.99x = 20,609,004,298.50
  5. Step 5: Solve for x
    x = 20,609,004,298.50/129,192.99
  6. Step 6: Final answer
    x = 159,521.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.