Home / 139,640.69-192,480.10-94,304.18

Finding the Fourth Proportional to 139,640.69, 192,480.10 and 94,304.18

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Solution

The fourth proportional to 139,640.69, 192,480.10 and 94,304.18 is: 129,988.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,640.69 : 192,480.10 = 94,304.18 : x
  2. Step 2: Convert to fraction form
    139,640.69/192,480.10 = 94,304.18/x
  3. Step 3: Cross multiply
    139,640.69x = 192,480.10 × 94,304.18
  4. Step 4: Simplify right side
    139,640.69x = 18,151,678,242.26
  5. Step 5: Solve for x
    x = 18,151,678,242.26/139,640.69
  6. Step 6: Final answer
    x = 129,988.46

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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.