Home / 118,145.31-163,011.58-75,761.25

Finding the Fourth Proportional to 118,145.31, 163,011.58 and 75,761.25

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Solution

The fourth proportional to 118,145.31, 163,011.58 and 75,761.25 is: 104,531.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,145.31 : 163,011.58 = 75,761.25 : x
  2. Step 2: Convert to fraction form
    118,145.31/163,011.58 = 75,761.25/x
  3. Step 3: Cross multiply
    118,145.31x = 163,011.58 × 75,761.25
  4. Step 4: Simplify right side
    118,145.31x = 12,349,961,065.28
  5. Step 5: Solve for x
    x = 12,349,961,065.28/118,145.31
  6. Step 6: Final answer
    x = 104,531.96

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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.