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Finding the Fourth Proportional to 143,661.12, 215,491.80 and 45,165.12

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Solution

The fourth proportional to 143,661.12, 215,491.80 and 45,165.12 is: 67,747.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,661.12 : 215,491.80 = 45,165.12 : x
  2. Step 2: Convert to fraction form
    143,661.12/215,491.80 = 45,165.12/x
  3. Step 3: Cross multiply
    143,661.12x = 215,491.80 × 45,165.12
  4. Step 4: Simplify right side
    143,661.12x = 9,732,713,006.02
  5. Step 5: Solve for x
    x = 9,732,713,006.02/143,661.12
  6. Step 6: Final answer
    x = 67,747.72

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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.