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Finding the Fourth Proportional to 150,475.36, 207,648 and 86,809.36

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Solution

The fourth proportional to 150,475.36, 207,648 and 86,809.36 is: 119,792.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,475.36 : 207,648 = 86,809.36 : x
  2. Step 2: Convert to fraction form
    150,475.36/207,648 = 86,809.36/x
  3. Step 3: Cross multiply
    150,475.36x = 207,648 × 86,809.36
  4. Step 4: Simplify right side
    150,475.36x = 18,025,789,985.28
  5. Step 5: Solve for x
    x = 18,025,789,985.28/150,475.36
  6. Step 6: Final answer
    x = 119,792.30

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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.