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Finding the Fourth Proportional to 99,435.42, 137,220.84 and 54,723.42

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Solution

The fourth proportional to 99,435.42, 137,220.84 and 54,723.42 is: 75,518.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,435.42 : 137,220.84 = 54,723.42 : x
  2. Step 2: Convert to fraction form
    99,435.42/137,220.84 = 54,723.42/x
  3. Step 3: Cross multiply
    99,435.42x = 137,220.84 × 54,723.42
  4. Step 4: Simplify right side
    99,435.42x = 7,509,193,660.07
  5. Step 5: Solve for x
    x = 7,509,193,660.07/99,435.42
  6. Step 6: Final answer
    x = 75,518.30

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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.