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Finding the Fourth Proportional to 118,213.80, 177,320.70 and 97,218.60

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Solution

The fourth proportional to 118,213.80, 177,320.70 and 97,218.60 is: 145,827.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,213.80 : 177,320.70 = 97,218.60 : x
  2. Step 2: Convert to fraction form
    118,213.80/177,320.70 = 97,218.60/x
  3. Step 3: Cross multiply
    118,213.80x = 177,320.70 × 97,218.60
  4. Step 4: Simplify right side
    118,213.80x = 17,238,870,205.02
  5. Step 5: Solve for x
    x = 17,238,870,205.02/118,213.80
  6. Step 6: Final answer
    x = 145,827.90

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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.