Home / 109,332.20-163,998.30-72,007.40

Finding the Fourth Proportional to 109,332.20, 163,998.30 and 72,007.40

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Solution

The fourth proportional to 109,332.20, 163,998.30 and 72,007.40 is: 108,011.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,332.20 : 163,998.30 = 72,007.40 : x
  2. Step 2: Convert to fraction form
    109,332.20/163,998.30 = 72,007.40/x
  3. Step 3: Cross multiply
    109,332.20x = 163,998.30 × 72,007.40
  4. Step 4: Simplify right side
    109,332.20x = 11,809,091,187.42
  5. Step 5: Solve for x
    x = 11,809,091,187.42/109,332.20
  6. Step 6: Final answer
    x = 108,011.10

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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.