Home / 138,458.90-191,073.27-74,796.69

Finding the Fourth Proportional to 138,458.90, 191,073.27 and 74,796.69

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Solution

The fourth proportional to 138,458.90, 191,073.27 and 74,796.69 is: 103,219.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,458.90 : 191,073.27 = 74,796.69 : x
  2. Step 2: Convert to fraction form
    138,458.90/191,073.27 = 74,796.69/x
  3. Step 3: Cross multiply
    138,458.90x = 191,073.27 × 74,796.69
  4. Step 4: Simplify right side
    138,458.90x = 14,291,648,143.48
  5. Step 5: Solve for x
    x = 14,291,648,143.48/138,458.90
  6. Step 6: Final answer
    x = 103,219.43

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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.