Home / 157,212.20-235,670.06-78,251.80

Finding the Fourth Proportional to 157,212.20, 235,670.06 and 78,251.80

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Solution

The fourth proportional to 157,212.20, 235,670.06 and 78,251.80 is: 117,303.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,212.20 : 235,670.06 = 78,251.80 : x
  2. Step 2: Convert to fraction form
    157,212.20/235,670.06 = 78,251.80/x
  3. Step 3: Cross multiply
    157,212.20x = 235,670.06 × 78,251.80
  4. Step 4: Simplify right side
    157,212.20x = 18,441,606,401.11
  5. Step 5: Solve for x
    x = 18,441,606,401.11/157,212.20
  6. Step 6: Final answer
    x = 117,303.91

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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.