Home / 445,781.36-668,669.70-108,823.79

Finding the Fourth Proportional to 445,781.36, 668,669.70 and 108,823.79

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Solution

The fourth proportional to 445,781.36, 668,669.70 and 108,823.79 is: 163,235.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,781.36 : 668,669.70 = 108,823.79 : x
  2. Step 2: Convert to fraction form
    445,781.36/668,669.70 = 108,823.79/x
  3. Step 3: Cross multiply
    445,781.36x = 668,669.70 × 108,823.79
  4. Step 4: Simplify right side
    445,781.36x = 72,767,167,668.81
  5. Step 5: Solve for x
    x = 72,767,167,668.81/445,781.36
  6. Step 6: Final answer
    x = 163,235.11

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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.