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Finding the Fourth Proportional to 162,117.36, 223,718.20 and 90,504

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Solution

The fourth proportional to 162,117.36, 223,718.20 and 90,504 is: 124,893.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,117.36 : 223,718.20 = 90,504 : x
  2. Step 2: Convert to fraction form
    162,117.36/223,718.20 = 90,504/x
  3. Step 3: Cross multiply
    162,117.36x = 223,718.20 × 90,504
  4. Step 4: Simplify right side
    162,117.36x = 20,247,391,972.80
  5. Step 5: Solve for x
    x = 20,247,391,972.80/162,117.36
  6. Step 6: Final answer
    x = 124,893.42

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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.