Home / 153,847.20-212,236.32-100,112.62

Finding the Fourth Proportional to 153,847.20, 212,236.32 and 100,112.62

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Solution

The fourth proportional to 153,847.20, 212,236.32 and 100,112.62 is: 138,108.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,847.20 : 212,236.32 = 100,112.62 : x
  2. Step 2: Convert to fraction form
    153,847.20/212,236.32 = 100,112.62/x
  3. Step 3: Cross multiply
    153,847.20x = 212,236.32 × 100,112.62
  4. Step 4: Simplify right side
    153,847.20x = 21,247,534,054.36
  5. Step 5: Solve for x
    x = 21,247,534,054.36/153,847.20
  6. Step 6: Final answer
    x = 138,108.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.