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Finding the Fourth Proportional to 101,387.32, 152,106.90 and 42,203.32

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Solution

The fourth proportional to 101,387.32, 152,106.90 and 42,203.32 is: 63,315.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,387.32 : 152,106.90 = 42,203.32 : x
  2. Step 2: Convert to fraction form
    101,387.32/152,106.90 = 42,203.32/x
  3. Step 3: Cross multiply
    101,387.32x = 152,106.90 × 42,203.32
  4. Step 4: Simplify right side
    101,387.32x = 6,419,416,174.91
  5. Step 5: Solve for x
    x = 6,419,416,174.91/101,387.32
  6. Step 6: Final answer
    x = 63,315.77

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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.