Home / 127,960.50-191,785.10-90,531.36

Finding the Fourth Proportional to 127,960.50, 191,785.10 and 90,531.36

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Solution

The fourth proportional to 127,960.50, 191,785.10 and 90,531.36 is: 135,686.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,960.50 : 191,785.10 = 90,531.36 : x
  2. Step 2: Convert to fraction form
    127,960.50/191,785.10 = 90,531.36/x
  3. Step 3: Cross multiply
    127,960.50x = 191,785.10 × 90,531.36
  4. Step 4: Simplify right side
    127,960.50x = 17,362,565,930.74
  5. Step 5: Solve for x
    x = 17,362,565,930.74/127,960.50
  6. Step 6: Final answer
    x = 135,686.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.