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Finding the Fourth Proportional to 101,386.32, 152,105.40 and 42,202.32

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Solution

The fourth proportional to 101,386.32, 152,105.40 and 42,202.32 is: 63,314.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,386.32 : 152,105.40 = 42,202.32 : x
  2. Step 2: Convert to fraction form
    101,386.32/152,105.40 = 42,202.32/x
  3. Step 3: Cross multiply
    101,386.32x = 152,105.40 × 42,202.32
  4. Step 4: Simplify right side
    101,386.32x = 6,419,200,764.53
  5. Step 5: Solve for x
    x = 6,419,200,764.53/101,386.32
  6. Step 6: Final answer
    x = 63,314.27

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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.