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Finding the Fourth Proportional to 122,503.32, 168,801.78 and 93,821.40

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Solution

The fourth proportional to 122,503.32, 168,801.78 and 93,821.40 is: 129,279.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,503.32 : 168,801.78 = 93,821.40 : x
  2. Step 2: Convert to fraction form
    122,503.32/168,801.78 = 93,821.40/x
  3. Step 3: Cross multiply
    122,503.32x = 168,801.78 × 93,821.40
  4. Step 4: Simplify right side
    122,503.32x = 15,837,219,322.09
  5. Step 5: Solve for x
    x = 15,837,219,322.09/122,503.32
  6. Step 6: Final answer
    x = 129,279.92

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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.