Home / 104,014.72-143,410.16-86,811.68

Finding the Fourth Proportional to 104,014.72, 143,410.16 and 86,811.68

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Solution

The fourth proportional to 104,014.72, 143,410.16 and 86,811.68 is: 119,691.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,014.72 : 143,410.16 = 86,811.68 : x
  2. Step 2: Convert to fraction form
    104,014.72/143,410.16 = 86,811.68/x
  3. Step 3: Cross multiply
    104,014.72x = 143,410.16 × 86,811.68
  4. Step 4: Simplify right side
    104,014.72x = 12,449,676,918.67
  5. Step 5: Solve for x
    x = 12,449,676,918.67/104,014.72
  6. Step 6: Final answer
    x = 119,691.49

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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.