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Finding the Fourth Proportional to 150,021.76, 207,030.08 and 85,489.14

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Solution

The fourth proportional to 150,021.76, 207,030.08 and 85,489.14 is: 117,975.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,021.76 : 207,030.08 = 85,489.14 : x
  2. Step 2: Convert to fraction form
    150,021.76/207,030.08 = 85,489.14/x
  3. Step 3: Cross multiply
    150,021.76x = 207,030.08 × 85,489.14
  4. Step 4: Simplify right side
    150,021.76x = 17,698,823,493.33
  5. Step 5: Solve for x
    x = 17,698,823,493.33/150,021.76
  6. Step 6: Final answer
    x = 117,975.04

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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.