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Finding the Fourth Proportional to 111,412.80, 167,248.80 and 67,089.60

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Solution

The fourth proportional to 111,412.80, 167,248.80 and 67,089.60 is: 100,712.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,412.80 : 167,248.80 = 67,089.60 : x
  2. Step 2: Convert to fraction form
    111,412.80/167,248.80 = 67,089.60/x
  3. Step 3: Cross multiply
    111,412.80x = 167,248.80 × 67,089.60
  4. Step 4: Simplify right side
    111,412.80x = 11,220,655,092.48
  5. Step 5: Solve for x
    x = 11,220,655,092.48/111,412.80
  6. Step 6: Final answer
    x = 100,712.44

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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.