Home / 118,121.24-163,010.58-72,188.31

Finding the Fourth Proportional to 118,121.24, 163,010.58 and 72,188.31

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Solution

The fourth proportional to 118,121.24, 163,010.58 and 72,188.31 is: 99,621.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,121.24 : 163,010.58 = 72,188.31 : x
  2. Step 2: Convert to fraction form
    118,121.24/163,010.58 = 72,188.31/x
  3. Step 3: Cross multiply
    118,121.24x = 163,010.58 × 72,188.31
  4. Step 4: Simplify right side
    118,121.24x = 11,767,458,622.90
  5. Step 5: Solve for x
    x = 11,767,458,622.90/118,121.24
  6. Step 6: Final answer
    x = 99,621.87

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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.