Home / 156,697.32-235,018.21-71,288.34

Finding the Fourth Proportional to 156,697.32, 235,018.21 and 71,288.34

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Solution

The fourth proportional to 156,697.32, 235,018.21 and 71,288.34 is: 106,919.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,697.32 : 235,018.21 = 71,288.34 : x
  2. Step 2: Convert to fraction form
    156,697.32/235,018.21 = 71,288.34/x
  3. Step 3: Cross multiply
    156,697.32x = 235,018.21 × 71,288.34
  4. Step 4: Simplify right side
    156,697.32x = 16,754,058,060.67
  5. Step 5: Solve for x
    x = 16,754,058,060.67/156,697.32
  6. Step 6: Final answer
    x = 106,919.88

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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.