Home / 137,215.74-189,328.86-80,606.46

Finding the Fourth Proportional to 137,215.74, 189,328.86 and 80,606.46

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Solution

The fourth proportional to 137,215.74, 189,328.86 and 80,606.46 is: 111,219.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,215.74 : 189,328.86 = 80,606.46 : x
  2. Step 2: Convert to fraction form
    137,215.74/189,328.86 = 80,606.46/x
  3. Step 3: Cross multiply
    137,215.74x = 189,328.86 × 80,606.46
  4. Step 4: Simplify right side
    137,215.74x = 15,261,129,180.44
  5. Step 5: Solve for x
    x = 15,261,129,180.44/137,215.74
  6. Step 6: Final answer
    x = 111,219.96

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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.