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Finding the Fourth Proportional to 196,774.48, 294,986.40 and 72,086.32

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Solution

The fourth proportional to 196,774.48, 294,986.40 and 72,086.32 is: 108,065.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,774.48 : 294,986.40 = 72,086.32 : x
  2. Step 2: Convert to fraction form
    196,774.48/294,986.40 = 72,086.32/x
  3. Step 3: Cross multiply
    196,774.48x = 294,986.40 × 72,086.32
  4. Step 4: Simplify right side
    196,774.48x = 21,264,484,026.05
  5. Step 5: Solve for x
    x = 21,264,484,026.05/196,774.48
  6. Step 6: Final answer
    x = 108,065.25

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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.