Home / 109,276.12-163,914.36-30,390.40

Finding the Fourth Proportional to 109,276.12, 163,914.36 and 30,390.40

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Solution

The fourth proportional to 109,276.12, 163,914.36 and 30,390.40 is: 45,585.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,276.12 : 163,914.36 = 30,390.40 : x
  2. Step 2: Convert to fraction form
    109,276.12/163,914.36 = 30,390.40/x
  3. Step 3: Cross multiply
    109,276.12x = 163,914.36 × 30,390.40
  4. Step 4: Simplify right side
    109,276.12x = 4,981,422,966.14
  5. Step 5: Solve for x
    x = 4,981,422,966.14/109,276.12
  6. Step 6: Final answer
    x = 45,585.65

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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.