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Finding the Fourth Proportional to 122,200.80, 183,301.20 and 80,210.40

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Solution

The fourth proportional to 122,200.80, 183,301.20 and 80,210.40 is: 120,315.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,200.80 : 183,301.20 = 80,210.40 : x
  2. Step 2: Convert to fraction form
    122,200.80/183,301.20 = 80,210.40/x
  3. Step 3: Cross multiply
    122,200.80x = 183,301.20 × 80,210.40
  4. Step 4: Simplify right side
    122,200.80x = 14,702,662,572.48
  5. Step 5: Solve for x
    x = 14,702,662,572.48/122,200.80
  6. Step 6: Final answer
    x = 120,315.60

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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.