Home / 117,301.88-161,748.20-87,143.15

Finding the Fourth Proportional to 117,301.88, 161,748.20 and 87,143.15

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Solution

The fourth proportional to 117,301.88, 161,748.20 and 87,143.15 is: 120,162.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,301.88 : 161,748.20 = 87,143.15 : x
  2. Step 2: Convert to fraction form
    117,301.88/161,748.20 = 87,143.15/x
  3. Step 3: Cross multiply
    117,301.88x = 161,748.20 × 87,143.15
  4. Step 4: Simplify right side
    117,301.88x = 14,095,247,219.11
  5. Step 5: Solve for x
    x = 14,095,247,219.11/117,301.88
  6. Step 6: Final answer
    x = 120,162.16

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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.