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Finding the Fourth Proportional to 97,408.80, 146,113.20 and 74,080.80

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Solution

The fourth proportional to 97,408.80, 146,113.20 and 74,080.80 is: 111,121.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,408.80 : 146,113.20 = 74,080.80 : x
  2. Step 2: Convert to fraction form
    97,408.80/146,113.20 = 74,080.80/x
  3. Step 3: Cross multiply
    97,408.80x = 146,113.20 × 74,080.80
  4. Step 4: Simplify right side
    97,408.80x = 10,824,182,746.56
  5. Step 5: Solve for x
    x = 10,824,182,746.56/97,408.80
  6. Step 6: Final answer
    x = 111,121.20

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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.