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Finding the Fourth Proportional to 99,408.04, 137,270.64 and 67,652.80

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Solution

The fourth proportional to 99,408.04, 137,270.64 and 67,652.80 is: 93,420.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,408.04 : 137,270.64 = 67,652.80 : x
  2. Step 2: Convert to fraction form
    99,408.04/137,270.64 = 67,652.80/x
  3. Step 3: Cross multiply
    99,408.04x = 137,270.64 × 67,652.80
  4. Step 4: Simplify right side
    99,408.04x = 9,286,743,153.79
  5. Step 5: Solve for x
    x = 9,286,743,153.79/99,408.04
  6. Step 6: Final answer
    x = 93,420.44

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1.5x scale

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.