Home / 118,207.38-163,120.47-64,489.20

Finding the Fourth Proportional to 118,207.38, 163,120.47 and 64,489.20

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Solution

The fourth proportional to 118,207.38, 163,120.47 and 64,489.20 is: 88,991.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,207.38 : 163,120.47 = 64,489.20 : x
  2. Step 2: Convert to fraction form
    118,207.38/163,120.47 = 64,489.20/x
  3. Step 3: Cross multiply
    118,207.38x = 163,120.47 × 64,489.20
  4. Step 4: Simplify right side
    118,207.38x = 10,519,508,613.92
  5. Step 5: Solve for x
    x = 10,519,508,613.92/118,207.38
  6. Step 6: Final answer
    x = 88,991.98

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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.