Home / 122,155.45-168,583.84-76,872.24

Finding the Fourth Proportional to 122,155.45, 168,583.84 and 76,872.24

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Solution

The fourth proportional to 122,155.45, 168,583.84 and 76,872.24 is: 106,089.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,155.45 : 168,583.84 = 76,872.24 : x
  2. Step 2: Convert to fraction form
    122,155.45/168,583.84 = 76,872.24/x
  3. Step 3: Cross multiply
    122,155.45x = 168,583.84 × 76,872.24
  4. Step 4: Simplify right side
    122,155.45x = 12,959,417,216.42
  5. Step 5: Solve for x
    x = 12,959,417,216.42/122,155.45
  6. Step 6: Final answer
    x = 106,089.56

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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.