Home / 109,320.80-163,981.20-69,922.40

Finding the Fourth Proportional to 109,320.80, 163,981.20 and 69,922.40

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Solution

The fourth proportional to 109,320.80, 163,981.20 and 69,922.40 is: 104,883.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,320.80 : 163,981.20 = 69,922.40 : x
  2. Step 2: Convert to fraction form
    109,320.80/163,981.20 = 69,922.40/x
  3. Step 3: Cross multiply
    109,320.80x = 163,981.20 × 69,922.40
  4. Step 4: Simplify right side
    109,320.80x = 11,465,959,058.88
  5. Step 5: Solve for x
    x = 11,465,959,058.88/109,320.80
  6. Step 6: Final answer
    x = 104,883.60

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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.