Home / 138,836.79-191,594.88-75,174.66

Finding the Fourth Proportional to 138,836.79, 191,594.88 and 75,174.66

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Solution

The fourth proportional to 138,836.79, 191,594.88 and 75,174.66 is: 103,741.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,836.79 : 191,594.88 = 75,174.66 : x
  2. Step 2: Convert to fraction form
    138,836.79/191,594.88 = 75,174.66/x
  3. Step 3: Cross multiply
    138,836.79x = 191,594.88 × 75,174.66
  4. Step 4: Simplify right side
    138,836.79x = 14,403,079,961.74
  5. Step 5: Solve for x
    x = 14,403,079,961.74/138,836.79
  6. Step 6: Final answer
    x = 103,741.09

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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.