Home / 189,961.02-284,836.20-77,719.98

Finding the Fourth Proportional to 189,961.02, 284,836.20 and 77,719.98

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Solution

The fourth proportional to 189,961.02, 284,836.20 and 77,719.98 is: 116,536.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,961.02 : 284,836.20 = 77,719.98 : x
  2. Step 2: Convert to fraction form
    189,961.02/284,836.20 = 77,719.98/x
  3. Step 3: Cross multiply
    189,961.02x = 284,836.20 × 77,719.98
  4. Step 4: Simplify right side
    189,961.02x = 22,137,463,767.28
  5. Step 5: Solve for x
    x = 22,137,463,767.28/189,961.02
  6. Step 6: Final answer
    x = 116,536.88

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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.