Home / 119,811.40-165,286.98-72,037

Finding the Fourth Proportional to 119,811.40, 165,286.98 and 72,037

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Solution

The fourth proportional to 119,811.40, 165,286.98 and 72,037 is: 99,379.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,811.40 : 165,286.98 = 72,037 : x
  2. Step 2: Convert to fraction form
    119,811.40/165,286.98 = 72,037/x
  3. Step 3: Cross multiply
    119,811.40x = 165,286.98 × 72,037
  4. Step 4: Simplify right side
    119,811.40x = 11,906,778,178.26
  5. Step 5: Solve for x
    x = 11,906,778,178.26/119,811.40
  6. Step 6: Final answer
    x = 99,379.34

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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.