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Finding the Fourth Proportional to 118,361.16, 177,543.36 and 66,103.20

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Solution

The fourth proportional to 118,361.16, 177,543.36 and 66,103.20 is: 99,155.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,361.16 : 177,543.36 = 66,103.20 : x
  2. Step 2: Convert to fraction form
    118,361.16/177,543.36 = 66,103.20/x
  3. Step 3: Cross multiply
    118,361.16x = 177,543.36 × 66,103.20
  4. Step 4: Simplify right side
    118,361.16x = 11,736,184,234.75
  5. Step 5: Solve for x
    x = 11,736,184,234.75/118,361.16
  6. Step 6: Final answer
    x = 99,155.70

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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.