Home / 109,519.63-151,142.36-61,771.88

Finding the Fourth Proportional to 109,519.63, 151,142.36 and 61,771.88

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Solution

The fourth proportional to 109,519.63, 151,142.36 and 61,771.88 is: 85,248.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,519.63 : 151,142.36 = 61,771.88 : x
  2. Step 2: Convert to fraction form
    109,519.63/151,142.36 = 61,771.88/x
  3. Step 3: Cross multiply
    109,519.63x = 151,142.36 × 61,771.88
  4. Step 4: Simplify right side
    109,519.63x = 9,336,347,415.98
  5. Step 5: Solve for x
    x = 9,336,347,415.98/109,519.63
  6. Step 6: Final answer
    x = 85,248.17

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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.