Home / 82,547.20-123,711.45-73,143.10

Finding the Fourth Proportional to 82,547.20, 123,711.45 and 73,143.10

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Solution

The fourth proportional to 82,547.20, 123,711.45 and 73,143.10 is: 109,617.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,547.20 : 123,711.45 = 73,143.10 : x
  2. Step 2: Convert to fraction form
    82,547.20/123,711.45 = 73,143.10/x
  3. Step 3: Cross multiply
    82,547.20x = 123,711.45 × 73,143.10
  4. Step 4: Simplify right side
    82,547.20x = 9,048,638,958.50
  5. Step 5: Solve for x
    x = 9,048,638,958.50/82,547.20
  6. Step 6: Final answer
    x = 109,617.76

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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.