Home / 138,224.96-190,702.24-77,785.92

Finding the Fourth Proportional to 138,224.96, 190,702.24 and 77,785.92

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Solution

The fourth proportional to 138,224.96, 190,702.24 and 77,785.92 is: 107,317.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,224.96 : 190,702.24 = 77,785.92 : x
  2. Step 2: Convert to fraction form
    138,224.96/190,702.24 = 77,785.92/x
  3. Step 3: Cross multiply
    138,224.96x = 190,702.24 × 77,785.92
  4. Step 4: Simplify right side
    138,224.96x = 14,833,949,184.46
  5. Step 5: Solve for x
    x = 14,833,949,184.46/138,224.96
  6. Step 6: Final answer
    x = 107,317.44

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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.