Home / 115,108.20-158,856.84-69,790.32

Finding the Fourth Proportional to 115,108.20, 158,856.84 and 69,790.32

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Solution

The fourth proportional to 115,108.20, 158,856.84 and 69,790.32 is: 96,315.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,108.20 : 158,856.84 = 69,790.32 : x
  2. Step 2: Convert to fraction form
    115,108.20/158,856.84 = 69,790.32/x
  3. Step 3: Cross multiply
    115,108.20x = 158,856.84 × 69,790.32
  4. Step 4: Simplify right side
    115,108.20x = 11,086,669,697.79
  5. Step 5: Solve for x
    x = 11,086,669,697.79/115,108.20
  6. Step 6: Final answer
    x = 96,315.20

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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.