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Finding the Fourth Proportional to 159,476.70, 239,215.05 and 70,903.20

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Solution

The fourth proportional to 159,476.70, 239,215.05 and 70,903.20 is: 106,354.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,476.70 : 239,215.05 = 70,903.20 : x
  2. Step 2: Convert to fraction form
    159,476.70/239,215.05 = 70,903.20/x
  3. Step 3: Cross multiply
    159,476.70x = 239,215.05 × 70,903.20
  4. Step 4: Simplify right side
    159,476.70x = 16,961,112,533.16
  5. Step 5: Solve for x
    x = 16,961,112,533.16/159,476.70
  6. Step 6: Final answer
    x = 106,354.80

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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.