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Finding the Fourth Proportional to 157,791.60, 236,860.20 and 87,807.60

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Solution

The fourth proportional to 157,791.60, 236,860.20 and 87,807.60 is: 131,807.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,791.60 : 236,860.20 = 87,807.60 : x
  2. Step 2: Convert to fraction form
    157,791.60/236,860.20 = 87,807.60/x
  3. Step 3: Cross multiply
    157,791.60x = 236,860.20 × 87,807.60
  4. Step 4: Simplify right side
    157,791.60x = 20,798,125,697.52
  5. Step 5: Solve for x
    x = 20,798,125,697.52/157,791.60
  6. Step 6: Final answer
    x = 131,807.56

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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.