Home / 117,212.40-175,559.40-90,709.20

Finding the Fourth Proportional to 117,212.40, 175,559.40 and 90,709.20

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Solution

The fourth proportional to 117,212.40, 175,559.40 and 90,709.20 is: 135,863.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,212.40 : 175,559.40 = 90,709.20 : x
  2. Step 2: Convert to fraction form
    117,212.40/175,559.40 = 90,709.20/x
  3. Step 3: Cross multiply
    117,212.40x = 175,559.40 × 90,709.20
  4. Step 4: Simplify right side
    117,212.40x = 15,924,852,726.48
  5. Step 5: Solve for x
    x = 15,924,852,726.48/117,212.40
  6. Step 6: Final answer
    x = 135,863.21

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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.