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Finding the Fourth Proportional to 171,888.90, 257,888.04 and 109,100.13

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Solution

The fourth proportional to 171,888.90, 257,888.04 and 109,100.13 is: 163,684.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,888.90 : 257,888.04 = 109,100.13 : x
  2. Step 2: Convert to fraction form
    171,888.90/257,888.04 = 109,100.13/x
  3. Step 3: Cross multiply
    171,888.90x = 257,888.04 × 109,100.13
  4. Step 4: Simplify right side
    171,888.90x = 28,135,618,689.45
  5. Step 5: Solve for x
    x = 28,135,618,689.45/171,888.90
  6. Step 6: Final answer
    x = 163,684.91

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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.