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Finding the Fourth Proportional to 101,272.60, 151,908.90 and 42,102.10

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Solution

The fourth proportional to 101,272.60, 151,908.90 and 42,102.10 is: 63,153.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,272.60 : 151,908.90 = 42,102.10 : x
  2. Step 2: Convert to fraction form
    101,272.60/151,908.90 = 42,102.10/x
  3. Step 3: Cross multiply
    101,272.60x = 151,908.90 × 42,102.10
  4. Step 4: Simplify right side
    101,272.60x = 6,395,683,698.69
  5. Step 5: Solve for x
    x = 6,395,683,698.69/101,272.60
  6. Step 6: Final answer
    x = 63,153.15

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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.