Home / 178,439.12-267,728.73-78,529.23

Finding the Fourth Proportional to 178,439.12, 267,728.73 and 78,529.23

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Solution

The fourth proportional to 178,439.12, 267,728.73 and 78,529.23 is: 117,824.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,439.12 : 267,728.73 = 78,529.23 : x
  2. Step 2: Convert to fraction form
    178,439.12/267,728.73 = 78,529.23/x
  3. Step 3: Cross multiply
    178,439.12x = 267,728.73 × 78,529.23
  4. Step 4: Simplify right side
    178,439.12x = 21,024,531,015.78
  5. Step 5: Solve for x
    x = 21,024,531,015.78/178,439.12
  6. Step 6: Final answer
    x = 117,824.67

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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.