Home / 138,406.77-191,001.35-74,744.55

Finding the Fourth Proportional to 138,406.77, 191,001.35 and 74,744.55

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Solution

The fourth proportional to 138,406.77, 191,001.35 and 74,744.55 is: 103,147.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,406.77 : 191,001.35 = 74,744.55 : x
  2. Step 2: Convert to fraction form
    138,406.77/191,001.35 = 74,744.55/x
  3. Step 3: Cross multiply
    138,406.77x = 191,001.35 × 74,744.55
  4. Step 4: Simplify right side
    138,406.77x = 14,276,310,142.00
  5. Step 5: Solve for x
    x = 14,276,310,142.00/138,406.77
  6. Step 6: Final answer
    x = 103,147.48

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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.