Home / 138,089.20-190,561.29-77,659.82

Finding the Fourth Proportional to 138,089.20, 190,561.29 and 77,659.82

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Solution

The fourth proportional to 138,089.20, 190,561.29 and 77,659.82 is: 107,169.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,089.20 : 190,561.29 = 77,659.82 : x
  2. Step 2: Convert to fraction form
    138,089.20/190,561.29 = 77,659.82/x
  3. Step 3: Cross multiply
    138,089.20x = 190,561.29 × 77,659.82
  4. Step 4: Simplify right side
    138,089.20x = 14,798,955,665.55
  5. Step 5: Solve for x
    x = 14,798,955,665.55/138,089.20
  6. Step 6: Final answer
    x = 107,169.54

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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.