Home / 109,288.20-163,910.70-53,128.20

Finding the Fourth Proportional to 109,288.20, 163,910.70 and 53,128.20

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Solution

The fourth proportional to 109,288.20, 163,910.70 and 53,128.20 is: 79,681.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,288.20 : 163,910.70 = 53,128.20 : x
  2. Step 2: Convert to fraction form
    109,288.20/163,910.70 = 53,128.20/x
  3. Step 3: Cross multiply
    109,288.20x = 163,910.70 × 53,128.20
  4. Step 4: Simplify right side
    109,288.20x = 8,708,280,451.74
  5. Step 5: Solve for x
    x = 8,708,280,451.74/109,288.20
  6. Step 6: Final answer
    x = 79,681.80

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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.