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Finding the Fourth Proportional to 100,888.58, 139,224.20 and 63,183.62

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Solution

The fourth proportional to 100,888.58, 139,224.20 and 63,183.62 is: 87,192.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,888.58 : 139,224.20 = 63,183.62 : x
  2. Step 2: Convert to fraction form
    100,888.58/139,224.20 = 63,183.62/x
  3. Step 3: Cross multiply
    100,888.58x = 139,224.20 × 63,183.62
  4. Step 4: Simplify right side
    100,888.58x = 8,796,688,947.60
  5. Step 5: Solve for x
    x = 8,796,688,947.60/100,888.58
  6. Step 6: Final answer
    x = 87,192.12

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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.