Home / 105,207.66-157,811.22-86,665.14

Finding the Fourth Proportional to 105,207.66, 157,811.22 and 86,665.14

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Solution

The fourth proportional to 105,207.66, 157,811.22 and 86,665.14 is: 129,997.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,207.66 : 157,811.22 = 86,665.14 : x
  2. Step 2: Convert to fraction form
    105,207.66/157,811.22 = 86,665.14/x
  3. Step 3: Cross multiply
    105,207.66x = 157,811.22 × 86,665.14
  4. Step 4: Simplify right side
    105,207.66x = 13,676,731,474.87
  5. Step 5: Solve for x
    x = 13,676,731,474.87/105,207.66
  6. Step 6: Final answer
    x = 129,997.49

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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.