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Finding the Fourth Proportional to 117,908.34, 162,660.93 and 79,655.58

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Solution

The fourth proportional to 117,908.34, 162,660.93 and 79,655.58 is: 109,889.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,908.34 : 162,660.93 = 79,655.58 : x
  2. Step 2: Convert to fraction form
    117,908.34/162,660.93 = 79,655.58/x
  3. Step 3: Cross multiply
    117,908.34x = 162,660.93 × 79,655.58
  4. Step 4: Simplify right side
    117,908.34x = 12,956,850,722.49
  5. Step 5: Solve for x
    x = 12,956,850,722.49/117,908.34
  6. Step 6: Final answer
    x = 109,889.18

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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.