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Finding the Fourth Proportional to 165,564.52, 228,479 and 90,113.56

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Solution

The fourth proportional to 165,564.52, 228,479 and 90,113.56 is: 124,356.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,564.52 : 228,479 = 90,113.56 : x
  2. Step 2: Convert to fraction form
    165,564.52/228,479 = 90,113.56/x
  3. Step 3: Cross multiply
    165,564.52x = 228,479 × 90,113.56
  4. Step 4: Simplify right side
    165,564.52x = 20,589,056,075.24
  5. Step 5: Solve for x
    x = 20,589,056,075.24/165,564.52
  6. Step 6: Final answer
    x = 124,356.69

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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.