Home / 135,872.64-187,169.40-115,664.76

Finding the Fourth Proportional to 135,872.64, 187,169.40 and 115,664.76

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Solution

The fourth proportional to 135,872.64, 187,169.40 and 115,664.76 is: 159,332.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,872.64 : 187,169.40 = 115,664.76 : x
  2. Step 2: Convert to fraction form
    135,872.64/187,169.40 = 115,664.76/x
  3. Step 3: Cross multiply
    135,872.64x = 187,169.40 × 115,664.76
  4. Step 4: Simplify right side
    135,872.64x = 21,648,903,730.34
  5. Step 5: Solve for x
    x = 21,648,903,730.34/135,872.64
  6. Step 6: Final answer
    x = 159,332.33

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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.