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Finding the Fourth Proportional to 100,710.54, 150,742.42 and 66,898.58

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Solution

The fourth proportional to 100,710.54, 150,742.42 and 66,898.58 is: 100,133.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,710.54 : 150,742.42 = 66,898.58 : x
  2. Step 2: Convert to fraction form
    100,710.54/150,742.42 = 66,898.58/x
  3. Step 3: Cross multiply
    100,710.54x = 150,742.42 × 66,898.58
  4. Step 4: Simplify right side
    100,710.54x = 10,084,452,922.81
  5. Step 5: Solve for x
    x = 10,084,452,922.81/100,710.54
  6. Step 6: Final answer
    x = 100,133.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.