Home / 189,872.78-284,560.02-139,718.03

Finding the Fourth Proportional to 189,872.78, 284,560.02 and 139,718.03

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Solution

The fourth proportional to 189,872.78, 284,560.02 and 139,718.03 is: 209,393.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,872.78 : 284,560.02 = 139,718.03 : x
  2. Step 2: Convert to fraction form
    189,872.78/284,560.02 = 139,718.03/x
  3. Step 3: Cross multiply
    189,872.78x = 284,560.02 × 139,718.03
  4. Step 4: Simplify right side
    189,872.78x = 39,758,163,988.36
  5. Step 5: Solve for x
    x = 39,758,163,988.36/189,872.78
  6. Step 6: Final answer
    x = 209,393.71

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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.