Home / 118,221.40-163,000.38-73,431.64

Finding the Fourth Proportional to 118,221.40, 163,000.38 and 73,431.64

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Solution

The fourth proportional to 118,221.40, 163,000.38 and 73,431.64 is: 101,245.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,221.40 : 163,000.38 = 73,431.64 : x
  2. Step 2: Convert to fraction form
    118,221.40/163,000.38 = 73,431.64/x
  3. Step 3: Cross multiply
    118,221.40x = 163,000.38 × 73,431.64
  4. Step 4: Simplify right side
    118,221.40x = 11,969,385,224.02
  5. Step 5: Solve for x
    x = 11,969,385,224.02/118,221.40
  6. Step 6: Final answer
    x = 101,245.50

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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.