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Finding the Fourth Proportional to 172,393.71, 237,751.87 and 120,684.31

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Solution

The fourth proportional to 172,393.71, 237,751.87 and 120,684.31 is: 166,438.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,393.71 : 237,751.87 = 120,684.31 : x
  2. Step 2: Convert to fraction form
    172,393.71/237,751.87 = 120,684.31/x
  3. Step 3: Cross multiply
    172,393.71x = 237,751.87 × 120,684.31
  4. Step 4: Simplify right side
    172,393.71x = 28,692,920,382.16
  5. Step 5: Solve for x
    x = 28,692,920,382.16/172,393.71
  6. Step 6: Final answer
    x = 166,438.33

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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.