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Finding the Fourth Proportional to 445,707.72, 668,551.86 and 108,751.32

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Solution

The fourth proportional to 445,707.72, 668,551.86 and 108,751.32 is: 163,124.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,707.72 : 668,551.86 = 108,751.32 : x
  2. Step 2: Convert to fraction form
    445,707.72/668,551.86 = 108,751.32/x
  3. Step 3: Cross multiply
    445,707.72x = 668,551.86 × 108,751.32
  4. Step 4: Simplify right side
    445,707.72x = 72,705,897,263.46
  5. Step 5: Solve for x
    x = 72,705,897,263.46/445,707.72
  6. Step 6: Final answer
    x = 163,124.61

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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.