Home / 118,387.31-163,345.21-76,003.25

Finding the Fourth Proportional to 118,387.31, 163,345.21 and 76,003.25

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Solution

The fourth proportional to 118,387.31, 163,345.21 and 76,003.25 is: 104,865.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,387.31 : 163,345.21 = 76,003.25 : x
  2. Step 2: Convert to fraction form
    118,387.31/163,345.21 = 76,003.25/x
  3. Step 3: Cross multiply
    118,387.31x = 163,345.21 × 76,003.25
  4. Step 4: Simplify right side
    118,387.31x = 12,414,765,825.20
  5. Step 5: Solve for x
    x = 12,414,765,825.20/118,387.31
  6. Step 6: Final answer
    x = 104,865.68

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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.