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Finding the Fourth Proportional to 109,300.80, 163,951.20 and 39,259.20

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Solution

The fourth proportional to 109,300.80, 163,951.20 and 39,259.20 is: 58,888.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,300.80 : 163,951.20 = 39,259.20 : x
  2. Step 2: Convert to fraction form
    109,300.80/163,951.20 = 39,259.20/x
  3. Step 3: Cross multiply
    109,300.80x = 163,951.20 × 39,259.20
  4. Step 4: Simplify right side
    109,300.80x = 6,436,592,951.04
  5. Step 5: Solve for x
    x = 6,436,592,951.04/109,300.80
  6. Step 6: Final answer
    x = 58,888.80

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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.