Home / 109,069.20-163,603.80-71,744.40

Finding the Fourth Proportional to 109,069.20, 163,603.80 and 71,744.40

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Solution

The fourth proportional to 109,069.20, 163,603.80 and 71,744.40 is: 107,616.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,069.20 : 163,603.80 = 71,744.40 : x
  2. Step 2: Convert to fraction form
    109,069.20/163,603.80 = 71,744.40/x
  3. Step 3: Cross multiply
    109,069.20x = 163,603.80 × 71,744.40
  4. Step 4: Simplify right side
    109,069.20x = 11,737,656,468.72
  5. Step 5: Solve for x
    x = 11,737,656,468.72/109,069.20
  6. Step 6: Final answer
    x = 107,616.60

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1.5x scale

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.