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Finding the Fourth Proportional to 143,437.84, 197,938.88 and 79,774.27

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Solution

The fourth proportional to 143,437.84, 197,938.88 and 79,774.27 is: 110,085.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,437.84 : 197,938.88 = 79,774.27 : x
  2. Step 2: Convert to fraction form
    143,437.84/197,938.88 = 79,774.27/x
  3. Step 3: Cross multiply
    143,437.84x = 197,938.88 × 79,774.27
  4. Step 4: Simplify right side
    143,437.84x = 15,790,429,656.62
  5. Step 5: Solve for x
    x = 15,790,429,656.62/143,437.84
  6. Step 6: Final answer
    x = 110,085.52

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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.