Home / 131,145.68-180,971.16-74,546

Finding the Fourth Proportional to 131,145.68, 180,971.16 and 74,546

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Solution

The fourth proportional to 131,145.68, 180,971.16 and 74,546 is: 102,867.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,145.68 : 180,971.16 = 74,546 : x
  2. Step 2: Convert to fraction form
    131,145.68/180,971.16 = 74,546/x
  3. Step 3: Cross multiply
    131,145.68x = 180,971.16 × 74,546
  4. Step 4: Simplify right side
    131,145.68x = 13,490,676,093.36
  5. Step 5: Solve for x
    x = 13,490,676,093.36/131,145.68
  6. Step 6: Final answer
    x = 102,867.86

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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.