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Finding the Fourth Proportional to 201,573.63, 278,113.91 and 129,994.74

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Solution

The fourth proportional to 201,573.63, 278,113.91 and 129,994.74 is: 179,355.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,573.63 : 278,113.91 = 129,994.74 : x
  2. Step 2: Convert to fraction form
    201,573.63/278,113.91 = 129,994.74/x
  3. Step 3: Cross multiply
    201,573.63x = 278,113.91 × 129,994.74
  4. Step 4: Simplify right side
    201,573.63x = 36,153,344,770.86
  5. Step 5: Solve for x
    x = 36,153,344,770.86/201,573.63
  6. Step 6: Final answer
    x = 179,355.53

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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.