Home / 136,032.92-187,671.48-78,661.64

Finding the Fourth Proportional to 136,032.92, 187,671.48 and 78,661.64

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Solution

The fourth proportional to 136,032.92, 187,671.48 and 78,661.64 is: 108,521.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,032.92 : 187,671.48 = 78,661.64 : x
  2. Step 2: Convert to fraction form
    136,032.92/187,671.48 = 78,661.64/x
  3. Step 3: Cross multiply
    136,032.92x = 187,671.48 × 78,661.64
  4. Step 4: Simplify right side
    136,032.92x = 14,762,546,398.03
  5. Step 5: Solve for x
    x = 14,762,546,398.03/136,032.92
  6. Step 6: Final answer
    x = 108,521.87

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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.