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Finding the Fourth Proportional to 118,157.16, 177,263.48 and 72,615.62

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Solution

The fourth proportional to 118,157.16, 177,263.48 and 72,615.62 is: 108,940.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,157.16 : 177,263.48 = 72,615.62 : x
  2. Step 2: Convert to fraction form
    118,157.16/177,263.48 = 72,615.62/x
  3. Step 3: Cross multiply
    118,157.16x = 177,263.48 × 72,615.62
  4. Step 4: Simplify right side
    118,157.16x = 12,872,096,254.16
  5. Step 5: Solve for x
    x = 12,872,096,254.16/118,157.16
  6. Step 6: Final answer
    x = 108,940.47

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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.