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Finding the Fourth Proportional to 157,078.65, 235,358.78 and 133,750.65

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Solution

The fourth proportional to 157,078.65, 235,358.78 and 133,750.65 is: 200,405.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,078.65 : 235,358.78 = 133,750.65 : x
  2. Step 2: Convert to fraction form
    157,078.65/235,358.78 = 133,750.65/x
  3. Step 3: Cross multiply
    157,078.65x = 235,358.78 × 133,750.65
  4. Step 4: Simplify right side
    157,078.65x = 31,479,389,139.45
  5. Step 5: Solve for x
    x = 31,479,389,139.45/157,078.65
  6. Step 6: Final answer
    x = 200,405.27

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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.