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Finding the Fourth Proportional to 99,833.80, 149,750.70 and 84,800.20

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Solution

The fourth proportional to 99,833.80, 149,750.70 and 84,800.20 is: 127,200.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,833.80 : 149,750.70 = 84,800.20 : x
  2. Step 2: Convert to fraction form
    99,833.80/149,750.70 = 84,800.20/x
  3. Step 3: Cross multiply
    99,833.80x = 149,750.70 × 84,800.20
  4. Step 4: Simplify right side
    99,833.80x = 12,698,889,310.14
  5. Step 5: Solve for x
    x = 12,698,889,310.14/99,833.80
  6. Step 6: Final answer
    x = 127,200.30

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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.