Home / 205,870.09-284,035.96-115,211.65

Finding the Fourth Proportional to 205,870.09, 284,035.96 and 115,211.65

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Solution

The fourth proportional to 205,870.09, 284,035.96 and 115,211.65 is: 158,955.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,870.09 : 284,035.96 = 115,211.65 : x
  2. Step 2: Convert to fraction form
    205,870.09/284,035.96 = 115,211.65/x
  3. Step 3: Cross multiply
    205,870.09x = 284,035.96 × 115,211.65
  4. Step 4: Simplify right side
    205,870.09x = 32,724,251,610.93
  5. Step 5: Solve for x
    x = 32,724,251,610.93/205,870.09
  6. Step 6: Final answer
    x = 158,955.83

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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.