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Finding the Fourth Proportional to 171,587.16, 257,276.52 and 76,799.34

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Solution

The fourth proportional to 171,587.16, 257,276.52 and 76,799.34 is: 115,152.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,587.16 : 257,276.52 = 76,799.34 : x
  2. Step 2: Convert to fraction form
    171,587.16/257,276.52 = 76,799.34/x
  3. Step 3: Cross multiply
    171,587.16x = 257,276.52 × 76,799.34
  4. Step 4: Simplify right side
    171,587.16x = 19,758,666,933.50
  5. Step 5: Solve for x
    x = 19,758,666,933.50/171,587.16
  6. Step 6: Final answer
    x = 115,152.36

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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.