Home / 107,438.52-161,142.90-28,559.16

Finding the Fourth Proportional to 107,438.52, 161,142.90 and 28,559.16

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Solution

The fourth proportional to 107,438.52, 161,142.90 and 28,559.16 is: 42,834.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,438.52 : 161,142.90 = 28,559.16 : x
  2. Step 2: Convert to fraction form
    107,438.52/161,142.90 = 28,559.16/x
  3. Step 3: Cross multiply
    107,438.52x = 161,142.90 × 28,559.16
  4. Step 4: Simplify right side
    107,438.52x = 4,602,105,863.96
  5. Step 5: Solve for x
    x = 4,602,105,863.96/107,438.52
  6. Step 6: Final answer
    x = 42,834.78

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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.