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Finding the Fourth Proportional to 109,209.80, 163,814.70 and 39,063.80

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Solution

The fourth proportional to 109,209.80, 163,814.70 and 39,063.80 is: 58,595.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,209.80 : 163,814.70 = 39,063.80 : x
  2. Step 2: Convert to fraction form
    109,209.80/163,814.70 = 39,063.80/x
  3. Step 3: Cross multiply
    109,209.80x = 163,814.70 × 39,063.80
  4. Step 4: Simplify right side
    109,209.80x = 6,399,224,677.86
  5. Step 5: Solve for x
    x = 6,399,224,677.86/109,209.80
  6. Step 6: Final answer
    x = 58,595.70

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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.