Home / 119,857.36-165,419.04-72,137.20

Finding the Fourth Proportional to 119,857.36, 165,419.04 and 72,137.20

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Solution

The fourth proportional to 119,857.36, 165,419.04 and 72,137.20 is: 99,558.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,857.36 : 165,419.04 = 72,137.20 : x
  2. Step 2: Convert to fraction form
    119,857.36/165,419.04 = 72,137.20/x
  3. Step 3: Cross multiply
    119,857.36x = 165,419.04 × 72,137.20
  4. Step 4: Simplify right side
    119,857.36x = 11,932,866,372.29
  5. Step 5: Solve for x
    x = 11,932,866,372.29/119,857.36
  6. Step 6: Final answer
    x = 99,558.90

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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.