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Finding the Fourth Proportional to 109,305.80, 150,911.66 and 89,210.62

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Solution

The fourth proportional to 109,305.80, 150,911.66 and 89,210.62 is: 123,167.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,305.80 : 150,911.66 = 89,210.62 : x
  2. Step 2: Convert to fraction form
    109,305.80/150,911.66 = 89,210.62/x
  3. Step 3: Cross multiply
    109,305.80x = 150,911.66 × 89,210.62
  4. Step 4: Simplify right side
    109,305.80x = 13,462,921,814.81
  5. Step 5: Solve for x
    x = 13,462,921,814.81/109,305.80
  6. Step 6: Final answer
    x = 123,167.49

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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.