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Finding the Fourth Proportional to 101,415.40, 152,123.10 and 100,832.20

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Solution

The fourth proportional to 101,415.40, 152,123.10 and 100,832.20 is: 151,248.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,415.40 : 152,123.10 = 100,832.20 : x
  2. Step 2: Convert to fraction form
    101,415.40/152,123.10 = 100,832.20/x
  3. Step 3: Cross multiply
    101,415.40x = 152,123.10 × 100,832.20
  4. Step 4: Simplify right side
    101,415.40x = 15,338,906,843.82
  5. Step 5: Solve for x
    x = 15,338,906,843.82/101,415.40
  6. Step 6: Final answer
    x = 151,248.30

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1.5x scale

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.