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Finding the Fourth Proportional to 145,940.67, 201,398.04 and 78,872.67

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Solution

The fourth proportional to 145,940.67, 201,398.04 and 78,872.67 is: 108,844.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,940.67 : 201,398.04 = 78,872.67 : x
  2. Step 2: Convert to fraction form
    145,940.67/201,398.04 = 78,872.67/x
  3. Step 3: Cross multiply
    145,940.67x = 201,398.04 × 78,872.67
  4. Step 4: Simplify right side
    145,940.67x = 15,884,801,147.57
  5. Step 5: Solve for x
    x = 15,884,801,147.57/145,940.67
  6. Step 6: Final answer
    x = 108,844.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.