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Finding the Fourth Proportional to 159,984.60, 240,005.70 and 66,499.80

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Solution

The fourth proportional to 159,984.60, 240,005.70 and 66,499.80 is: 99,761.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,984.60 : 240,005.70 = 66,499.80 : x
  2. Step 2: Convert to fraction form
    159,984.60/240,005.70 = 66,499.80/x
  3. Step 3: Cross multiply
    159,984.60x = 240,005.70 × 66,499.80
  4. Step 4: Simplify right side
    159,984.60x = 15,960,331,048.86
  5. Step 5: Solve for x
    x = 15,960,331,048.86/159,984.60
  6. Step 6: Final answer
    x = 99,761.67

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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.