Home / 139,790.52-192,904.07-79,353.08

Finding the Fourth Proportional to 139,790.52, 192,904.07 and 79,353.08

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Solution

The fourth proportional to 139,790.52, 192,904.07 and 79,353.08 is: 109,503.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,790.52 : 192,904.07 = 79,353.08 : x
  2. Step 2: Convert to fraction form
    139,790.52/192,904.07 = 79,353.08/x
  3. Step 3: Cross multiply
    139,790.52x = 192,904.07 × 79,353.08
  4. Step 4: Simplify right side
    139,790.52x = 15,307,531,461.14
  5. Step 5: Solve for x
    x = 15,307,531,461.14/139,790.52
  6. Step 6: Final answer
    x = 109,503.36

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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.