Home / 75,157.39-112,590.18-67,172.11

Finding the Fourth Proportional to 75,157.39, 112,590.18 and 67,172.11

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Solution

The fourth proportional to 75,157.39, 112,590.18 and 67,172.11 is: 100,627.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,157.39 : 112,590.18 = 67,172.11 : x
  2. Step 2: Convert to fraction form
    75,157.39/112,590.18 = 67,172.11/x
  3. Step 3: Cross multiply
    75,157.39x = 112,590.18 × 67,172.11
  4. Step 4: Simplify right side
    75,157.39x = 7,562,919,802.14
  5. Step 5: Solve for x
    x = 7,562,919,802.14/75,157.39
  6. Step 6: Final answer
    x = 100,627.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.