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Finding the Fourth Proportional to 165,605, 228,535.44 and 90,154.04

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Solution

The fourth proportional to 165,605, 228,535.44 and 90,154.04 is: 124,412.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,605 : 228,535.44 = 90,154.04 : x
  2. Step 2: Convert to fraction form
    165,605/228,535.44 = 90,154.04/x
  3. Step 3: Cross multiply
    165,605x = 228,535.44 × 90,154.04
  4. Step 4: Simplify right side
    165,605x = 20,603,393,199.18
  5. Step 5: Solve for x
    x = 20,603,393,199.18/165,605
  6. Step 6: Final answer
    x = 124,412.87

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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.