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Finding the Fourth Proportional to 99,288.70, 148,933.05 and 89,266.30

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Solution

The fourth proportional to 99,288.70, 148,933.05 and 89,266.30 is: 133,899.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,288.70 : 148,933.05 = 89,266.30 : x
  2. Step 2: Convert to fraction form
    99,288.70/148,933.05 = 89,266.30/x
  3. Step 3: Cross multiply
    99,288.70x = 148,933.05 × 89,266.30
  4. Step 4: Simplify right side
    99,288.70x = 13,294,702,321.22
  5. Step 5: Solve for x
    x = 13,294,702,321.22/99,288.70
  6. Step 6: Final answer
    x = 133,899.45

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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.