Home / 138,231.14-190,759.32-77,802.68

Finding the Fourth Proportional to 138,231.14, 190,759.32 and 77,802.68

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Solution

The fourth proportional to 138,231.14, 190,759.32 and 77,802.68 is: 107,367.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,231.14 : 190,759.32 = 77,802.68 : x
  2. Step 2: Convert to fraction form
    138,231.14/190,759.32 = 77,802.68/x
  3. Step 3: Cross multiply
    138,231.14x = 190,759.32 × 77,802.68
  4. Step 4: Simplify right side
    138,231.14x = 14,841,586,330.98
  5. Step 5: Solve for x
    x = 14,841,586,330.98/138,231.14
  6. Step 6: Final answer
    x = 107,367.89

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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.