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Finding the Fourth Proportional to 104,661.92, 144,281.04 and 79,467.68

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Solution

The fourth proportional to 104,661.92, 144,281.04 and 79,467.68 is: 109,549.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,661.92 : 144,281.04 = 79,467.68 : x
  2. Step 2: Convert to fraction form
    104,661.92/144,281.04 = 79,467.68/x
  3. Step 3: Cross multiply
    104,661.92x = 144,281.04 × 79,467.68
  4. Step 4: Simplify right side
    104,661.92x = 11,465,679,516.79
  5. Step 5: Solve for x
    x = 11,465,679,516.79/104,661.92
  6. Step 6: Final answer
    x = 109,549.68

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1.5x scale

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.