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Finding the Fourth Proportional to 109,169.80, 163,655.70 and 39,032.80

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Solution

The fourth proportional to 109,169.80, 163,655.70 and 39,032.80 is: 58,513.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,169.80 : 163,655.70 = 39,032.80 : x
  2. Step 2: Convert to fraction form
    109,169.80/163,655.70 = 39,032.80/x
  3. Step 3: Cross multiply
    109,169.80x = 163,655.70 × 39,032.80
  4. Step 4: Simplify right side
    109,169.80x = 6,387,940,206.96
  5. Step 5: Solve for x
    x = 6,387,940,206.96/109,169.80
  6. Step 6: Final answer
    x = 58,513.80

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1.5x scale

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.