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Finding the Fourth Proportional to 143,293.80, 197,733.78 and 85,945.80

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Solution

The fourth proportional to 143,293.80, 197,733.78 and 85,945.80 is: 118,598.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,293.80 : 197,733.78 = 85,945.80 : x
  2. Step 2: Convert to fraction form
    143,293.80/197,733.78 = 85,945.80/x
  3. Step 3: Cross multiply
    143,293.80x = 197,733.78 × 85,945.80
  4. Step 4: Simplify right side
    143,293.80x = 16,994,387,909.12
  5. Step 5: Solve for x
    x = 16,994,387,909.12/143,293.80
  6. Step 6: Final answer
    x = 118,598.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.