Home / 78,126.60-117,522.47-70,819.18

Finding the Fourth Proportional to 78,126.60, 117,522.47 and 70,819.18

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Solution

The fourth proportional to 78,126.60, 117,522.47 and 70,819.18 is: 106,530.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,126.60 : 117,522.47 = 70,819.18 : x
  2. Step 2: Convert to fraction form
    78,126.60/117,522.47 = 70,819.18/x
  3. Step 3: Cross multiply
    78,126.60x = 117,522.47 × 70,819.18
  4. Step 4: Simplify right side
    78,126.60x = 8,322,844,956.97
  5. Step 5: Solve for x
    x = 8,322,844,956.97/78,126.60
  6. Step 6: Final answer
    x = 106,530.23

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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.