Home / 109,638.69-151,307.46-77,383.62

Finding the Fourth Proportional to 109,638.69, 151,307.46 and 77,383.62

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Solution

The fourth proportional to 109,638.69, 151,307.46 and 77,383.62 is: 106,793.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,638.69 : 151,307.46 = 77,383.62 : x
  2. Step 2: Convert to fraction form
    109,638.69/151,307.46 = 77,383.62/x
  3. Step 3: Cross multiply
    109,638.69x = 151,307.46 × 77,383.62
  4. Step 4: Simplify right side
    109,638.69x = 11,708,718,987.81
  5. Step 5: Solve for x
    x = 11,708,718,987.81/109,638.69
  6. Step 6: Final answer
    x = 106,793.68

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Double scale
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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.