Home / 138,133.27-190,640.79-77,706.46

Finding the Fourth Proportional to 138,133.27, 190,640.79 and 77,706.46

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Solution

The fourth proportional to 138,133.27, 190,640.79 and 77,706.46 is: 107,244.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,133.27 : 190,640.79 = 77,706.46 : x
  2. Step 2: Convert to fraction form
    138,133.27/190,640.79 = 77,706.46/x
  3. Step 3: Cross multiply
    138,133.27x = 190,640.79 × 77,706.46
  4. Step 4: Simplify right side
    138,133.27x = 14,814,020,922.50
  5. Step 5: Solve for x
    x = 14,814,020,922.50/138,133.27
  6. Step 6: Final answer
    x = 107,244.41

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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.