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Finding the Fourth Proportional to 99,409.67, 137,185.34 and 54,087.67

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Solution

The fourth proportional to 99,409.67, 137,185.34 and 54,087.67 is: 74,640.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,409.67 : 137,185.34 = 54,087.67 : x
  2. Step 2: Convert to fraction form
    99,409.67/137,185.34 = 54,087.67/x
  3. Step 3: Cross multiply
    99,409.67x = 137,185.34 × 54,087.67
  4. Step 4: Simplify right side
    99,409.67x = 7,420,035,398.76
  5. Step 5: Solve for x
    x = 7,420,035,398.76/99,409.67
  6. Step 6: Final answer
    x = 74,640.98

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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.