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Finding the Fourth Proportional to 116.02, 159.74 and 99.56

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Solution

The fourth proportional to 116.02, 159.74 and 99.56 is: 137.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    116.02 : 159.74 = 99.56 : x
  2. Step 2: Convert to fraction form
    116.02/159.74 = 99.56/x
  3. Step 3: Cross multiply
    116.02x = 159.74 × 99.56
  4. Step 4: Simplify right side
    116.02x = 15,903.71
  5. Step 5: Solve for x
    x = 15,903.71/116.02
  6. Step 6: Final answer
    x = 137.08

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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.