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Finding the Fourth Proportional to 150,544, 207,783.12 and 90,128.13

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Solution

The fourth proportional to 150,544, 207,783.12 and 90,128.13 is: 124,396.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,544 : 207,783.12 = 90,128.13 : x
  2. Step 2: Convert to fraction form
    150,544/207,783.12 = 90,128.13/x
  3. Step 3: Cross multiply
    150,544x = 207,783.12 × 90,128.13
  4. Step 4: Simplify right side
    150,544x = 18,727,104,051.17
  5. Step 5: Solve for x
    x = 18,727,104,051.17/150,544
  6. Step 6: Final answer
    x = 124,396.22

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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.