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Finding the Fourth Proportional to 104,019.32, 143,511 and 58,691.72

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Solution

The fourth proportional to 104,019.32, 143,511 and 58,691.72 is: 80,974.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,019.32 : 143,511 = 58,691.72 : x
  2. Step 2: Convert to fraction form
    104,019.32/143,511 = 58,691.72/x
  3. Step 3: Cross multiply
    104,019.32x = 143,511 × 58,691.72
  4. Step 4: Simplify right side
    104,019.32x = 8,422,907,428.92
  5. Step 5: Solve for x
    x = 8,422,907,428.92/104,019.32
  6. Step 6: Final answer
    x = 80,974.45

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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.