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Finding the Fourth Proportional to 189,671.13, 261,722.52 and 118,074.24

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Solution

The fourth proportional to 189,671.13, 261,722.52 and 118,074.24 is: 162,927.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,671.13 : 261,722.52 = 118,074.24 : x
  2. Step 2: Convert to fraction form
    189,671.13/261,722.52 = 118,074.24/x
  3. Step 3: Cross multiply
    189,671.13x = 261,722.52 × 118,074.24
  4. Step 4: Simplify right side
    189,671.13x = 30,902,687,639.88
  5. Step 5: Solve for x
    x = 30,902,687,639.88/189,671.13
  6. Step 6: Final answer
    x = 162,927.74

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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.