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Finding the Fourth Proportional to 117,580.78, 162,261.45 and 63,865.90

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Solution

The fourth proportional to 117,580.78, 162,261.45 and 63,865.90 is: 88,134.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,580.78 : 162,261.45 = 63,865.90 : x
  2. Step 2: Convert to fraction form
    117,580.78/162,261.45 = 63,865.90/x
  3. Step 3: Cross multiply
    117,580.78x = 162,261.45 × 63,865.90
  4. Step 4: Simplify right side
    117,580.78x = 10,362,973,539.56
  5. Step 5: Solve for x
    x = 10,362,973,539.56/117,580.78
  6. Step 6: Final answer
    x = 88,134.93

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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.