Home / 117,781.79-162,543.17-65,395.24

Finding the Fourth Proportional to 117,781.79, 162,543.17 and 65,395.24

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Solution

The fourth proportional to 117,781.79, 162,543.17 and 65,395.24 is: 90,247.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,781.79 : 162,543.17 = 65,395.24 : x
  2. Step 2: Convert to fraction form
    117,781.79/162,543.17 = 65,395.24/x
  3. Step 3: Cross multiply
    117,781.79x = 162,543.17 × 65,395.24
  4. Step 4: Simplify right side
    117,781.79x = 10,629,549,369.64
  5. Step 5: Solve for x
    x = 10,629,549,369.64/117,781.79
  6. Step 6: Final answer
    x = 90,247.82

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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.