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Finding the Fourth Proportional to 148,624.50, 205,101.81 and 81,560.82

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Solution

The fourth proportional to 148,624.50, 205,101.81 and 81,560.82 is: 112,553.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,624.50 : 205,101.81 = 81,560.82 : x
  2. Step 2: Convert to fraction form
    148,624.50/205,101.81 = 81,560.82/x
  3. Step 3: Cross multiply
    148,624.50x = 205,101.81 × 81,560.82
  4. Step 4: Simplify right side
    148,624.50x = 16,728,271,807.08
  5. Step 5: Solve for x
    x = 16,728,271,807.08/148,624.50
  6. Step 6: Final answer
    x = 112,553.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.