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Finding the Fourth Proportional to 99,581.67, 149,400.18 and 43,426.68

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Solution

The fourth proportional to 99,581.67, 149,400.18 and 43,426.68 is: 65,152.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,581.67 : 149,400.18 = 43,426.68 : x
  2. Step 2: Convert to fraction form
    99,581.67/149,400.18 = 43,426.68/x
  3. Step 3: Cross multiply
    99,581.67x = 149,400.18 × 43,426.68
  4. Step 4: Simplify right side
    99,581.67x = 6,487,953,808.80
  5. Step 5: Solve for x
    x = 6,487,953,808.80/99,581.67
  6. Step 6: Final answer
    x = 65,152.09

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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.