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Finding the Fourth Proportional to 162,339.88, 224,028.38 and 90,719.88

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Solution

The fourth proportional to 162,339.88, 224,028.38 and 90,719.88 is: 125,193.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,339.88 : 224,028.38 = 90,719.88 : x
  2. Step 2: Convert to fraction form
    162,339.88/224,028.38 = 90,719.88/x
  3. Step 3: Cross multiply
    162,339.88x = 224,028.38 × 90,719.88
  4. Step 4: Simplify right side
    162,339.88x = 20,323,828,817.10
  5. Step 5: Solve for x
    x = 20,323,828,817.10/162,339.88
  6. Step 6: Final answer
    x = 125,193.07

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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.