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Finding the Fourth Proportional to 150,361.20, 207,520.56 and 86,686.56

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Solution

The fourth proportional to 150,361.20, 207,520.56 and 86,686.56 is: 119,640.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,361.20 : 207,520.56 = 86,686.56 : x
  2. Step 2: Convert to fraction form
    150,361.20/207,520.56 = 86,686.56/x
  3. Step 3: Cross multiply
    150,361.20x = 207,520.56 × 86,686.56
  4. Step 4: Simplify right side
    150,361.20x = 17,989,243,475.67
  5. Step 5: Solve for x
    x = 17,989,243,475.67/150,361.20
  6. Step 6: Final answer
    x = 119,640.20

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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.