Home / 136,837.53-188,833.99-76,409.20

Finding the Fourth Proportional to 136,837.53, 188,833.99 and 76,409.20

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Solution

The fourth proportional to 136,837.53, 188,833.99 and 76,409.20 is: 105,443.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,837.53 : 188,833.99 = 76,409.20 : x
  2. Step 2: Convert to fraction form
    136,837.53/188,833.99 = 76,409.20/x
  3. Step 3: Cross multiply
    136,837.53x = 188,833.99 × 76,409.20
  4. Step 4: Simplify right side
    136,837.53x = 14,428,654,108.71
  5. Step 5: Solve for x
    x = 14,428,654,108.71/136,837.53
  6. Step 6: Final answer
    x = 105,443.69

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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.