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Finding the Fourth Proportional to 104,555.30, 156,744.79 and 45,346.38

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Solution

The fourth proportional to 104,555.30, 156,744.79 and 45,346.38 is: 67,981.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,555.30 : 156,744.79 = 45,346.38 : x
  2. Step 2: Convert to fraction form
    104,555.30/156,744.79 = 45,346.38/x
  3. Step 3: Cross multiply
    104,555.30x = 156,744.79 × 45,346.38
  4. Step 4: Simplify right side
    104,555.30x = 7,107,808,109.20
  5. Step 5: Solve for x
    x = 7,107,808,109.20/104,555.30
  6. Step 6: Final answer
    x = 67,981.33

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1.5x scale

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.