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Finding the Fourth Proportional to 92,221.60, 129,285.20 and 92,221.60

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Solution

The fourth proportional to 92,221.60, 129,285.20 and 92,221.60 is: 129,285.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,221.60 : 129,285.20 = 92,221.60 : x
  2. Step 2: Convert to fraction form
    92,221.60/129,285.20 = 92,221.60/x
  3. Step 3: Cross multiply
    92,221.60x = 129,285.20 × 92,221.60
  4. Step 4: Simplify right side
    92,221.60x = 11,922,888,000.32
  5. Step 5: Solve for x
    x = 11,922,888,000.32/92,221.60
  6. Step 6: Final answer
    x = 129,285.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.