Home / 138,626.41-191,304.90-74,964.66

Finding the Fourth Proportional to 138,626.41, 191,304.90 and 74,964.66

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Solution

The fourth proportional to 138,626.41, 191,304.90 and 74,964.66 is: 103,451.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,626.41 : 191,304.90 = 74,964.66 : x
  2. Step 2: Convert to fraction form
    138,626.41/191,304.90 = 74,964.66/x
  3. Step 3: Cross multiply
    138,626.41x = 191,304.90 × 74,964.66
  4. Step 4: Simplify right side
    138,626.41x = 14,341,106,784.83
  5. Step 5: Solve for x
    x = 14,341,106,784.83/138,626.41
  6. Step 6: Final answer
    x = 103,451.48

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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.