Home / 142,255.40-196,314.53-78,594.67

Finding the Fourth Proportional to 142,255.40, 196,314.53 and 78,594.67

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Solution

The fourth proportional to 142,255.40, 196,314.53 and 78,594.67 is: 108,461.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,255.40 : 196,314.53 = 78,594.67 : x
  2. Step 2: Convert to fraction form
    142,255.40/196,314.53 = 78,594.67/x
  3. Step 3: Cross multiply
    142,255.40x = 196,314.53 × 78,594.67
  4. Step 4: Simplify right side
    142,255.40x = 15,429,274,817.80
  5. Step 5: Solve for x
    x = 15,429,274,817.80/142,255.40
  6. Step 6: Final answer
    x = 108,461.78

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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.