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Finding the Fourth Proportional to 148,011.60, 221,871.60 and 73,143.30

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Solution

The fourth proportional to 148,011.60, 221,871.60 and 73,143.30 is: 109,642.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,011.60 : 221,871.60 = 73,143.30 : x
  2. Step 2: Convert to fraction form
    148,011.60/221,871.60 = 73,143.30/x
  3. Step 3: Cross multiply
    148,011.60x = 221,871.60 × 73,143.30
  4. Step 4: Simplify right side
    148,011.60x = 16,228,421,000.28
  5. Step 5: Solve for x
    x = 16,228,421,000.28/148,011.60
  6. Step 6: Final answer
    x = 109,642.90

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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.