Home / 118,531.70-163,560.32-70,135.10

Finding the Fourth Proportional to 118,531.70, 163,560.32 and 70,135.10

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Solution

The fourth proportional to 118,531.70, 163,560.32 and 70,135.10 is: 96,778.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,531.70 : 163,560.32 = 70,135.10 : x
  2. Step 2: Convert to fraction form
    118,531.70/163,560.32 = 70,135.10/x
  3. Step 3: Cross multiply
    118,531.70x = 163,560.32 × 70,135.10
  4. Step 4: Simplify right side
    118,531.70x = 11,471,319,399.23
  5. Step 5: Solve for x
    x = 11,471,319,399.23/118,531.70
  6. Step 6: Final answer
    x = 96,778.49

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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.