Home / 138,371.52-190,927.33-77,929.21

Finding the Fourth Proportional to 138,371.52, 190,927.33 and 77,929.21

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Solution

The fourth proportional to 138,371.52, 190,927.33 and 77,929.21 is: 107,528.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,371.52 : 190,927.33 = 77,929.21 : x
  2. Step 2: Convert to fraction form
    138,371.52/190,927.33 = 77,929.21/x
  3. Step 3: Cross multiply
    138,371.52x = 190,927.33 × 77,929.21
  4. Step 4: Simplify right side
    138,371.52x = 14,878,816,575.13
  5. Step 5: Solve for x
    x = 14,878,816,575.13/138,371.52
  6. Step 6: Final answer
    x = 107,528.03

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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.