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Finding the Fourth Proportional to 99,288.40, 148,673.40 and 64,037.20

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Solution

The fourth proportional to 99,288.40, 148,673.40 and 64,037.20 is: 95,888.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,288.40 : 148,673.40 = 64,037.20 : x
  2. Step 2: Convert to fraction form
    99,288.40/148,673.40 = 64,037.20/x
  3. Step 3: Cross multiply
    99,288.40x = 148,673.40 × 64,037.20
  4. Step 4: Simplify right side
    99,288.40x = 9,520,628,250.48
  5. Step 5: Solve for x
    x = 9,520,628,250.48/99,288.40
  6. Step 6: Final answer
    x = 95,888.63

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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.