Home / 138,043.26-190,506.42-77,632.92

Finding the Fourth Proportional to 138,043.26, 190,506.42 and 77,632.92

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Solution

The fourth proportional to 138,043.26, 190,506.42 and 77,632.92 is: 107,137.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,043.26 : 190,506.42 = 77,632.92 : x
  2. Step 2: Convert to fraction form
    138,043.26/190,506.42 = 77,632.92/x
  3. Step 3: Cross multiply
    138,043.26x = 190,506.42 × 77,632.92
  4. Step 4: Simplify right side
    138,043.26x = 14,789,569,663.35
  5. Step 5: Solve for x
    x = 14,789,569,663.35/138,043.26
  6. Step 6: Final answer
    x = 107,137.21

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1.5x scale

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.