Home / 99,138.21-148,585.50-39,106.42

Finding the Fourth Proportional to 99,138.21, 148,585.50 and 39,106.42

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Solution

The fourth proportional to 99,138.21, 148,585.50 and 39,106.42 is: 58,611.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,138.21 : 148,585.50 = 39,106.42 : x
  2. Step 2: Convert to fraction form
    99,138.21/148,585.50 = 39,106.42/x
  3. Step 3: Cross multiply
    99,138.21x = 148,585.50 × 39,106.42
  4. Step 4: Simplify right side
    99,138.21x = 5,810,646,968.91
  5. Step 5: Solve for x
    x = 5,810,646,968.91/99,138.21
  6. Step 6: Final answer
    x = 58,611.58

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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.