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Finding the Fourth Proportional to 99,262.47, 148,900.20 and 72,687.99

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Solution

The fourth proportional to 99,262.47, 148,900.20 and 72,687.99 is: 109,036.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,262.47 : 148,900.20 = 72,687.99 : x
  2. Step 2: Convert to fraction form
    99,262.47/148,900.20 = 72,687.99/x
  3. Step 3: Cross multiply
    99,262.47x = 148,900.20 × 72,687.99
  4. Step 4: Simplify right side
    99,262.47x = 10,823,256,248.60
  5. Step 5: Solve for x
    x = 10,823,256,248.60/99,262.47
  6. Step 6: Final answer
    x = 109,036.74

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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.