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Finding the Fourth Proportional to 157,078.90, 235,359.15 and 133,750.90

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Solution

The fourth proportional to 157,078.90, 235,359.15 and 133,750.90 is: 200,405.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,078.90 : 235,359.15 = 133,750.90 : x
  2. Step 2: Convert to fraction form
    157,078.90/235,359.15 = 133,750.90/x
  3. Step 3: Cross multiply
    157,078.90x = 235,359.15 × 133,750.90
  4. Step 4: Simplify right side
    157,078.90x = 31,479,498,135.74
  5. Step 5: Solve for x
    x = 31,479,498,135.74/157,078.90
  6. Step 6: Final answer
    x = 200,405.64

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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.