Home / 137,750.06-190,108.10-80,384.75

Finding the Fourth Proportional to 137,750.06, 190,108.10 and 80,384.75

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Solution

The fourth proportional to 137,750.06, 190,108.10 and 80,384.75 is: 110,938.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,750.06 : 190,108.10 = 80,384.75 : x
  2. Step 2: Convert to fraction form
    137,750.06/190,108.10 = 80,384.75/x
  3. Step 3: Cross multiply
    137,750.06x = 190,108.10 × 80,384.75
  4. Step 4: Simplify right side
    137,750.06x = 15,281,790,739.01
  5. Step 5: Solve for x
    x = 15,281,790,739.01/137,750.06
  6. Step 6: Final answer
    x = 110,938.55

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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.