Home / 139,966.26-193,148.55-76,302.78

Finding the Fourth Proportional to 139,966.26, 193,148.55 and 76,302.78

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Solution

The fourth proportional to 139,966.26, 193,148.55 and 76,302.78 is: 105,295.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,966.26 : 193,148.55 = 76,302.78 : x
  2. Step 2: Convert to fraction form
    139,966.26/193,148.55 = 76,302.78/x
  3. Step 3: Cross multiply
    139,966.26x = 193,148.55 × 76,302.78
  4. Step 4: Simplify right side
    139,966.26x = 14,737,771,317.97
  5. Step 5: Solve for x
    x = 14,737,771,317.97/139,966.26
  6. Step 6: Final answer
    x = 105,295.17

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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.