Home / 137,017.45-189,084.01-80,428.82

Finding the Fourth Proportional to 137,017.45, 189,084.01 and 80,428.82

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Solution

The fourth proportional to 137,017.45, 189,084.01 and 80,428.82 is: 110,991.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,017.45 : 189,084.01 = 80,428.82 : x
  2. Step 2: Convert to fraction form
    137,017.45/189,084.01 = 80,428.82/x
  3. Step 3: Cross multiply
    137,017.45x = 189,084.01 × 80,428.82
  4. Step 4: Simplify right side
    137,017.45x = 15,207,803,805.17
  5. Step 5: Solve for x
    x = 15,207,803,805.17/137,017.45
  6. Step 6: Final answer
    x = 110,991.73

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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.