Home / 139,664.76-192,704.58-79,221.48

Finding the Fourth Proportional to 139,664.76, 192,704.58 and 79,221.48

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Solution

The fourth proportional to 139,664.76, 192,704.58 and 79,221.48 is: 109,307.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,664.76 : 192,704.58 = 79,221.48 : x
  2. Step 2: Convert to fraction form
    139,664.76/192,704.58 = 79,221.48/x
  3. Step 3: Cross multiply
    139,664.76x = 192,704.58 × 79,221.48
  4. Step 4: Simplify right side
    139,664.76x = 15,266,342,030.38
  5. Step 5: Solve for x
    x = 15,266,342,030.38/139,664.76
  6. Step 6: Final answer
    x = 109,307.04

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1.5x scale

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.