Home / 138,386.84-190,948.44-77,944.56

Finding the Fourth Proportional to 138,386.84, 190,948.44 and 77,944.56

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Solution

The fourth proportional to 138,386.84, 190,948.44 and 77,944.56 is: 107,549.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,386.84 : 190,948.44 = 77,944.56 : x
  2. Step 2: Convert to fraction form
    138,386.84/190,948.44 = 77,944.56/x
  3. Step 3: Cross multiply
    138,386.84x = 190,948.44 × 77,944.56
  4. Step 4: Simplify right side
    138,386.84x = 14,883,392,138.49
  5. Step 5: Solve for x
    x = 14,883,392,138.49/138,386.84
  6. Step 6: Final answer
    x = 107,549.19

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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.