Home / 100,001.76-137,997.36-55,281.12

Finding the Fourth Proportional to 100,001.76, 137,997.36 and 55,281.12

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Solution

The fourth proportional to 100,001.76, 137,997.36 and 55,281.12 is: 76,285.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,001.76 : 137,997.36 = 55,281.12 : x
  2. Step 2: Convert to fraction form
    100,001.76/137,997.36 = 55,281.12/x
  3. Step 3: Cross multiply
    100,001.76x = 137,997.36 × 55,281.12
  4. Step 4: Simplify right side
    100,001.76x = 7,628,648,617.84
  5. Step 5: Solve for x
    x = 7,628,648,617.84/100,001.76
  6. Step 6: Final answer
    x = 76,285.14

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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.