Home / 109,289.20-163,933.80-99,612.40

Finding the Fourth Proportional to 109,289.20, 163,933.80 and 99,612.40

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Solution

The fourth proportional to 109,289.20, 163,933.80 and 99,612.40 is: 149,418.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,289.20 : 163,933.80 = 99,612.40 : x
  2. Step 2: Convert to fraction form
    109,289.20/163,933.80 = 99,612.40/x
  3. Step 3: Cross multiply
    109,289.20x = 163,933.80 × 99,612.40
  4. Step 4: Simplify right side
    109,289.20x = 16,329,839,259.12
  5. Step 5: Solve for x
    x = 16,329,839,259.12/109,289.20
  6. Step 6: Final answer
    x = 149,418.60

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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.