Home / 117,381.72-161,987.22-63,667.20

Finding the Fourth Proportional to 117,381.72, 161,987.22 and 63,667.20

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Solution

The fourth proportional to 117,381.72, 161,987.22 and 63,667.20 is: 87,860.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,381.72 : 161,987.22 = 63,667.20 : x
  2. Step 2: Convert to fraction form
    117,381.72/161,987.22 = 63,667.20/x
  3. Step 3: Cross multiply
    117,381.72x = 161,987.22 × 63,667.20
  4. Step 4: Simplify right side
    117,381.72x = 10,313,272,733.18
  5. Step 5: Solve for x
    x = 10,313,272,733.18/117,381.72
  6. Step 6: Final answer
    x = 87,860.98

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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.