Home / 137,278.97-189,435.71-76,020.76

Finding the Fourth Proportional to 137,278.97, 189,435.71 and 76,020.76

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Solution

The fourth proportional to 137,278.97, 189,435.71 and 76,020.76 is: 104,903.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,278.97 : 189,435.71 = 76,020.76 : x
  2. Step 2: Convert to fraction form
    137,278.97/189,435.71 = 76,020.76/x
  3. Step 3: Cross multiply
    137,278.97x = 189,435.71 × 76,020.76
  4. Step 4: Simplify right side
    137,278.97x = 14,401,047,072.19
  5. Step 5: Solve for x
    x = 14,401,047,072.19/137,278.97
  6. Step 6: Final answer
    x = 104,903.52

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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.