Home / 209,912.17-289,679.24-137,364.82

Finding the Fourth Proportional to 209,912.17, 289,679.24 and 137,364.82

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Solution

The fourth proportional to 209,912.17, 289,679.24 and 137,364.82 is: 189,563.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,912.17 : 289,679.24 = 137,364.82 : x
  2. Step 2: Convert to fraction form
    209,912.17/289,679.24 = 137,364.82/x
  3. Step 3: Cross multiply
    209,912.17x = 289,679.24 × 137,364.82
  4. Step 4: Simplify right side
    209,912.17x = 39,791,736,697.71
  5. Step 5: Solve for x
    x = 39,791,736,697.71/209,912.17
  6. Step 6: Final answer
    x = 189,563.74

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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.