Home / 137,432.32-189,652.64-80,084.32

Finding the Fourth Proportional to 137,432.32, 189,652.64 and 80,084.32

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Solution

The fourth proportional to 137,432.32, 189,652.64 and 80,084.32 is: 110,514.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,432.32 : 189,652.64 = 80,084.32 : x
  2. Step 2: Convert to fraction form
    137,432.32/189,652.64 = 80,084.32/x
  3. Step 3: Cross multiply
    137,432.32x = 189,652.64 × 80,084.32
  4. Step 4: Simplify right side
    137,432.32x = 15,188,202,710.60
  5. Step 5: Solve for x
    x = 15,188,202,710.60/137,432.32
  6. Step 6: Final answer
    x = 110,514.05

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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.