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Finding the Fourth Proportional to 157,686.82, 217,636.03 and 94,028.72

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Solution

The fourth proportional to 157,686.82, 217,636.03 and 94,028.72 is: 129,776.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,686.82 : 217,636.03 = 94,028.72 : x
  2. Step 2: Convert to fraction form
    157,686.82/217,636.03 = 94,028.72/x
  3. Step 3: Cross multiply
    157,686.82x = 217,636.03 × 94,028.72
  4. Step 4: Simplify right side
    157,686.82x = 20,464,036,819.66
  5. Step 5: Solve for x
    x = 20,464,036,819.66/157,686.82
  6. Step 6: Final answer
    x = 129,776.46

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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.