Home / 102,921.29-142,031.39-55,817.29

Finding the Fourth Proportional to 102,921.29, 142,031.39 and 55,817.29

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Solution

The fourth proportional to 102,921.29, 142,031.39 and 55,817.29 is: 77,027.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,921.29 : 142,031.39 = 55,817.29 : x
  2. Step 2: Convert to fraction form
    102,921.29/142,031.39 = 55,817.29/x
  3. Step 3: Cross multiply
    102,921.29x = 142,031.39 × 55,817.29
  4. Step 4: Simplify right side
    102,921.29x = 7,927,807,360.73
  5. Step 5: Solve for x
    x = 7,927,807,360.73/102,921.29
  6. Step 6: Final answer
    x = 77,027.86

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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.