Home / 138,275.17-190,837.94-77,857.59

Finding the Fourth Proportional to 138,275.17, 190,837.94 and 77,857.59

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Solution

The fourth proportional to 138,275.17, 190,837.94 and 77,857.59 is: 107,453.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,275.17 : 190,837.94 = 77,857.59 : x
  2. Step 2: Convert to fraction form
    138,275.17/190,837.94 = 77,857.59/x
  3. Step 3: Cross multiply
    138,275.17x = 190,837.94 × 77,857.59
  4. Step 4: Simplify right side
    138,275.17x = 14,858,182,219.40
  5. Step 5: Solve for x
    x = 14,858,182,219.40/138,275.17
  6. Step 6: Final answer
    x = 107,453.72

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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.