Home / 120,127.62-165,792.57-69,139.29

Finding the Fourth Proportional to 120,127.62, 165,792.57 and 69,139.29

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Solution

The fourth proportional to 120,127.62, 165,792.57 and 69,139.29 is: 95,421.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,127.62 : 165,792.57 = 69,139.29 : x
  2. Step 2: Convert to fraction form
    120,127.62/165,792.57 = 69,139.29/x
  3. Step 3: Cross multiply
    120,127.62x = 165,792.57 × 69,139.29
  4. Step 4: Simplify right side
    120,127.62x = 11,462,780,577.08
  5. Step 5: Solve for x
    x = 11,462,780,577.08/120,127.62
  6. Step 6: Final answer
    x = 95,421.69

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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.