Home / 109,004.40-163,530.90-42,438.60

Finding the Fourth Proportional to 109,004.40, 163,530.90 and 42,438.60

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Solution

The fourth proportional to 109,004.40, 163,530.90 and 42,438.60 is: 63,667.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,004.40 : 163,530.90 = 42,438.60 : x
  2. Step 2: Convert to fraction form
    109,004.40/163,530.90 = 42,438.60/x
  3. Step 3: Cross multiply
    109,004.40x = 163,530.90 × 42,438.60
  4. Step 4: Simplify right side
    109,004.40x = 6,940,022,452.74
  5. Step 5: Solve for x
    x = 6,940,022,452.74/109,004.40
  6. Step 6: Final answer
    x = 63,667.36

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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.