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Finding the Fourth Proportional to 117,475.88, 162,114.30 and 66,487.70

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Solution

The fourth proportional to 117,475.88, 162,114.30 and 66,487.70 is: 91,751.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,475.88 : 162,114.30 = 66,487.70 : x
  2. Step 2: Convert to fraction form
    117,475.88/162,114.30 = 66,487.70/x
  3. Step 3: Cross multiply
    117,475.88x = 162,114.30 × 66,487.70
  4. Step 4: Simplify right side
    117,475.88x = 10,778,607,349.40
  5. Step 5: Solve for x
    x = 10,778,607,349.40/117,475.88
  6. Step 6: Final answer
    x = 91,751.66

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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.