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Finding the Fourth Proportional to 173,748.40, 260,768.40 and 85,077.70

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Solution

The fourth proportional to 173,748.40, 260,768.40 and 85,077.70 is: 127,687.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,748.40 : 260,768.40 = 85,077.70 : x
  2. Step 2: Convert to fraction form
    173,748.40/260,768.40 = 85,077.70/x
  3. Step 3: Cross multiply
    173,748.40x = 260,768.40 × 85,077.70
  4. Step 4: Simplify right side
    173,748.40x = 22,185,575,704.68
  5. Step 5: Solve for x
    x = 22,185,575,704.68/173,748.40
  6. Step 6: Final answer
    x = 127,687.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.