Home / 120,150.68-165,780.32-71,743.16

Finding the Fourth Proportional to 120,150.68, 165,780.32 and 71,743.16

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Solution

The fourth proportional to 120,150.68, 165,780.32 and 71,743.16 is: 98,989.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,150.68 : 165,780.32 = 71,743.16 : x
  2. Step 2: Convert to fraction form
    120,150.68/165,780.32 = 71,743.16/x
  3. Step 3: Cross multiply
    120,150.68x = 165,780.32 × 71,743.16
  4. Step 4: Simplify right side
    120,150.68x = 11,893,602,834.99
  5. Step 5: Solve for x
    x = 11,893,602,834.99/120,150.68
  6. Step 6: Final answer
    x = 98,989.06

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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.