Home / 189,880.15-284,571.06-139,725.40

Finding the Fourth Proportional to 189,880.15, 284,571.06 and 139,725.40

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Solution

The fourth proportional to 189,880.15, 284,571.06 and 139,725.40 is: 209,404.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,880.15 : 284,571.06 = 139,725.40 : x
  2. Step 2: Convert to fraction form
    189,880.15/284,571.06 = 139,725.40/x
  3. Step 3: Cross multiply
    189,880.15x = 284,571.06 × 139,725.40
  4. Step 4: Simplify right side
    189,880.15x = 39,761,805,186.92
  5. Step 5: Solve for x
    x = 39,761,805,186.92/189,880.15
  6. Step 6: Final answer
    x = 209,404.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.