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Finding the Fourth Proportional to 152,313.50, 209,817.06 and 129,579.68

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Solution

The fourth proportional to 152,313.50, 209,817.06 and 129,579.68 is: 178,500.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,313.50 : 209,817.06 = 129,579.68 : x
  2. Step 2: Convert to fraction form
    152,313.50/209,817.06 = 129,579.68/x
  3. Step 3: Cross multiply
    152,313.50x = 209,817.06 × 129,579.68
  4. Step 4: Simplify right side
    152,313.50x = 27,188,027,493.34
  5. Step 5: Solve for x
    x = 27,188,027,493.34/152,313.50
  6. Step 6: Final answer
    x = 178,500.44

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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.