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Finding the Fourth Proportional to 99,823.80, 149,735.70 and 92,220.60

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Solution

The fourth proportional to 99,823.80, 149,735.70 and 92,220.60 is: 138,330.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,823.80 : 149,735.70 = 92,220.60 : x
  2. Step 2: Convert to fraction form
    99,823.80/149,735.70 = 92,220.60/x
  3. Step 3: Cross multiply
    99,823.80x = 149,735.70 × 92,220.60
  4. Step 4: Simplify right side
    99,823.80x = 13,808,716,095.42
  5. Step 5: Solve for x
    x = 13,808,716,095.42/99,823.80
  6. Step 6: Final answer
    x = 138,330.90

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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.