Home / 142,462.44-196,585.92-78,784.38

Finding the Fourth Proportional to 142,462.44, 196,585.92 and 78,784.38

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Solution

The fourth proportional to 142,462.44, 196,585.92 and 78,784.38 is: 108,715.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,462.44 : 196,585.92 = 78,784.38 : x
  2. Step 2: Convert to fraction form
    142,462.44/196,585.92 = 78,784.38/x
  3. Step 3: Cross multiply
    142,462.44x = 196,585.92 × 78,784.38
  4. Step 4: Simplify right side
    142,462.44x = 15,487,899,823.93
  5. Step 5: Solve for x
    x = 15,487,899,823.93/142,462.44
  6. Step 6: Final answer
    x = 108,715.67

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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.