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Finding the Fourth Proportional to 125,556, 173,282.68 and 72,564

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Solution

The fourth proportional to 125,556, 173,282.68 and 72,564 is: 100,147.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,556 : 173,282.68 = 72,564 : x
  2. Step 2: Convert to fraction form
    125,556/173,282.68 = 72,564/x
  3. Step 3: Cross multiply
    125,556x = 173,282.68 × 72,564
  4. Step 4: Simplify right side
    125,556x = 12,574,084,391.52
  5. Step 5: Solve for x
    x = 12,574,084,391.52/125,556
  6. Step 6: Final answer
    x = 100,147.22

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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.