Home / 189,531.49-284,364.92-81,415.43

Finding the Fourth Proportional to 189,531.49, 284,364.92 and 81,415.43

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Solution

The fourth proportional to 189,531.49, 284,364.92 and 81,415.43 is: 122,152.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,531.49 : 284,364.92 = 81,415.43 : x
  2. Step 2: Convert to fraction form
    189,531.49/284,364.92 = 81,415.43/x
  3. Step 3: Cross multiply
    189,531.49x = 284,364.92 × 81,415.43
  4. Step 4: Simplify right side
    189,531.49x = 23,151,692,238.72
  5. Step 5: Solve for x
    x = 23,151,692,238.72/189,531.49
  6. Step 6: Final answer
    x = 122,152.22

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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.