Home / 118,211.92-163,135.56-72,278.44

Finding the Fourth Proportional to 118,211.92, 163,135.56 and 72,278.44

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Solution

The fourth proportional to 118,211.92, 163,135.56 and 72,278.44 is: 99,746.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,211.92 : 163,135.56 = 72,278.44 : x
  2. Step 2: Convert to fraction form
    118,211.92/163,135.56 = 72,278.44/x
  3. Step 3: Cross multiply
    118,211.92x = 163,135.56 × 72,278.44
  4. Step 4: Simplify right side
    118,211.92x = 11,791,183,785.33
  5. Step 5: Solve for x
    x = 11,791,183,785.33/118,211.92
  6. Step 6: Final answer
    x = 99,746.15

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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.