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Finding the Fourth Proportional to 119,281.21, 164,606.23 and 65,565.08

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Solution

The fourth proportional to 119,281.21, 164,606.23 and 65,565.08 is: 90,478.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,281.21 : 164,606.23 = 65,565.08 : x
  2. Step 2: Convert to fraction form
    119,281.21/164,606.23 = 65,565.08/x
  3. Step 3: Cross multiply
    119,281.21x = 164,606.23 × 65,565.08
  4. Step 4: Simplify right side
    119,281.21x = 10,792,419,651.50
  5. Step 5: Solve for x
    x = 10,792,419,651.50/119,281.21
  6. Step 6: Final answer
    x = 90,478.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.