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Finding the Fourth Proportional to 114,936,672.40, 172,488,989.40 and 80,924,448.40

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Solution

The fourth proportional to 114,936,672.40, 172,488,989.40 and 80,924,448.40 is: 121,445,801.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,936,672.40 : 172,488,989.40 = 80,924,448.40 : x
  2. Step 2: Convert to fraction form
    114,936,672.40/172,488,989.40 = 80,924,448.40/x
  3. Step 3: Cross multiply
    114,936,672.40x = 172,488,989.40 × 80,924,448.40
  4. Step 4: Simplify right side
    114,936,672.40x = 13,958,576,322,268,448
  5. Step 5: Solve for x
    x = 13,958,576,322,268,448/114,936,672.40
  6. Step 6: Final answer
    x = 121,445,801.68

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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.