Home / 138,088.82-190,560.77-77,659.45

Finding the Fourth Proportional to 138,088.82, 190,560.77 and 77,659.45

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Solution

The fourth proportional to 138,088.82, 190,560.77 and 77,659.45 is: 107,169.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,088.82 : 190,560.77 = 77,659.45 : x
  2. Step 2: Convert to fraction form
    138,088.82/190,560.77 = 77,659.45/x
  3. Step 3: Cross multiply
    138,088.82x = 190,560.77 × 77,659.45
  4. Step 4: Simplify right side
    138,088.82x = 14,798,844,016.30
  5. Step 5: Solve for x
    x = 14,798,844,016.30/138,088.82
  6. Step 6: Final answer
    x = 107,169.02

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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.