Home / 138,223.84-190,749.66-77,795.44

Finding the Fourth Proportional to 138,223.84, 190,749.66 and 77,795.44

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Solution

The fourth proportional to 138,223.84, 190,749.66 and 77,795.44 is: 107,358.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,223.84 : 190,749.66 = 77,795.44 : x
  2. Step 2: Convert to fraction form
    138,223.84/190,749.66 = 77,795.44/x
  3. Step 3: Cross multiply
    138,223.84x = 190,749.66 × 77,795.44
  4. Step 4: Simplify right side
    138,223.84x = 14,839,453,729.55
  5. Step 5: Solve for x
    x = 14,839,453,729.55/138,223.84
  6. Step 6: Final answer
    x = 107,358.14

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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.