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Finding the Fourth Proportional to 99,000.20, 148,434.70 and 54,648.20

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Solution

The fourth proportional to 99,000.20, 148,434.70 and 54,648.20 is: 81,936.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,000.20 : 148,434.70 = 54,648.20 : x
  2. Step 2: Convert to fraction form
    99,000.20/148,434.70 = 54,648.20/x
  3. Step 3: Cross multiply
    99,000.20x = 148,434.70 × 54,648.20
  4. Step 4: Simplify right side
    99,000.20x = 8,111,689,172.54
  5. Step 5: Solve for x
    x = 8,111,689,172.54/99,000.20
  6. Step 6: Final answer
    x = 81,936.09

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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.