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Finding the Fourth Proportional to 157,998.81, 217,908.45 and 112,662.30

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Solution

The fourth proportional to 157,998.81, 217,908.45 and 112,662.30 is: 155,381.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,998.81 : 217,908.45 = 112,662.30 : x
  2. Step 2: Convert to fraction form
    157,998.81/217,908.45 = 112,662.30/x
  3. Step 3: Cross multiply
    157,998.81x = 217,908.45 × 112,662.30
  4. Step 4: Simplify right side
    157,998.81x = 24,550,067,166.44
  5. Step 5: Solve for x
    x = 24,550,067,166.44/157,998.81
  6. Step 6: Final answer
    x = 155,381.34

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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.