Home / 445,980.12-668,964.30-109,023.72

Finding the Fourth Proportional to 445,980.12, 668,964.30 and 109,023.72

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Solution

The fourth proportional to 445,980.12, 668,964.30 and 109,023.72 is: 163,534.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,980.12 : 668,964.30 = 109,023.72 : x
  2. Step 2: Convert to fraction form
    445,980.12/668,964.30 = 109,023.72/x
  3. Step 3: Cross multiply
    445,980.12x = 668,964.30 × 109,023.72
  4. Step 4: Simplify right side
    445,980.12x = 72,932,976,533.20
  5. Step 5: Solve for x
    x = 72,932,976,533.20/445,980.12
  6. Step 6: Final answer
    x = 163,534.14

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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.