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Finding the Fourth Proportional to 207,693.86, 312,191.08 and 137,070.33

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Solution

The fourth proportional to 207,693.86, 312,191.08 and 137,070.33 is: 206,034.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,693.86 : 312,191.08 = 137,070.33 : x
  2. Step 2: Convert to fraction form
    207,693.86/312,191.08 = 137,070.33/x
  3. Step 3: Cross multiply
    207,693.86x = 312,191.08 × 137,070.33
  4. Step 4: Simplify right side
    207,693.86x = 42,792,132,845.26
  5. Step 5: Solve for x
    x = 42,792,132,845.26/207,693.86
  6. Step 6: Final answer
    x = 206,034.66

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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.