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Finding the Fourth Proportional to 137,335.80, 206,003.70 and 84,847.80

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Solution

The fourth proportional to 137,335.80, 206,003.70 and 84,847.80 is: 127,271.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,335.80 : 206,003.70 = 84,847.80 : x
  2. Step 2: Convert to fraction form
    137,335.80/206,003.70 = 84,847.80/x
  3. Step 3: Cross multiply
    137,335.80x = 206,003.70 × 84,847.80
  4. Step 4: Simplify right side
    137,335.80x = 17,478,960,736.86
  5. Step 5: Solve for x
    x = 17,478,960,736.86/137,335.80
  6. Step 6: Final answer
    x = 127,271.70

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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.