Home / 137,035.32-189,029.88-80,435.76

Finding the Fourth Proportional to 137,035.32, 189,029.88 and 80,435.76

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Solution

The fourth proportional to 137,035.32, 189,029.88 and 80,435.76 is: 110,955.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,035.32 : 189,029.88 = 80,435.76 : x
  2. Step 2: Convert to fraction form
    137,035.32/189,029.88 = 80,435.76/x
  3. Step 3: Cross multiply
    137,035.32x = 189,029.88 × 80,435.76
  4. Step 4: Simplify right side
    137,035.32x = 15,204,762,060.51
  5. Step 5: Solve for x
    x = 15,204,762,060.51/137,035.32
  6. Step 6: Final answer
    x = 110,955.06

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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.