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Finding the Fourth Proportional to 137,888.28, 206,832.48 and 39,392.28

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Solution

The fourth proportional to 137,888.28, 206,832.48 and 39,392.28 is: 59,088.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,888.28 : 206,832.48 = 39,392.28 : x
  2. Step 2: Convert to fraction form
    137,888.28/206,832.48 = 39,392.28/x
  3. Step 3: Cross multiply
    137,888.28x = 206,832.48 × 39,392.28
  4. Step 4: Simplify right side
    137,888.28x = 8,147,602,965.25
  5. Step 5: Solve for x
    x = 8,147,602,965.25/137,888.28
  6. Step 6: Final answer
    x = 59,088.44

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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.