Home / 139,731.29-192,829.12-76,069.07

Finding the Fourth Proportional to 139,731.29, 192,829.12 and 76,069.07

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Solution

The fourth proportional to 139,731.29, 192,829.12 and 76,069.07 is: 104,975.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,731.29 : 192,829.12 = 76,069.07 : x
  2. Step 2: Convert to fraction form
    139,731.29/192,829.12 = 76,069.07/x
  3. Step 3: Cross multiply
    139,731.29x = 192,829.12 × 76,069.07
  4. Step 4: Simplify right side
    139,731.29x = 14,668,331,827.32
  5. Step 5: Solve for x
    x = 14,668,331,827.32/139,731.29
  6. Step 6: Final answer
    x = 104,975.28

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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.