Home / 127,435.78-191,141.33-38,690.06

Finding the Fourth Proportional to 127,435.78, 191,141.33 and 38,690.06

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Solution

The fourth proportional to 127,435.78, 191,141.33 and 38,690.06 is: 58,031.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,435.78 : 191,141.33 = 38,690.06 : x
  2. Step 2: Convert to fraction form
    127,435.78/191,141.33 = 38,690.06/x
  3. Step 3: Cross multiply
    127,435.78x = 191,141.33 × 38,690.06
  4. Step 4: Simplify right side
    127,435.78x = 7,395,268,377.02
  5. Step 5: Solve for x
    x = 7,395,268,377.02/127,435.78
  6. Step 6: Final answer
    x = 58,031.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.