Home / 137,410.32-189,583.20-76,972.80

Finding the Fourth Proportional to 137,410.32, 189,583.20 and 76,972.80

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Solution

The fourth proportional to 137,410.32, 189,583.20 and 76,972.80 is: 106,198.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,410.32 : 189,583.20 = 76,972.80 : x
  2. Step 2: Convert to fraction form
    137,410.32/189,583.20 = 76,972.80/x
  3. Step 3: Cross multiply
    137,410.32x = 189,583.20 × 76,972.80
  4. Step 4: Simplify right side
    137,410.32x = 14,592,749,736.96
  5. Step 5: Solve for x
    x = 14,592,749,736.96/137,410.32
  6. Step 6: Final answer
    x = 106,198.35

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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.