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Finding the Fourth Proportional to 150,361.32, 207,498.79 and 81,450.95

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Solution

The fourth proportional to 150,361.32, 207,498.79 and 81,450.95 is: 112,402.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,361.32 : 207,498.79 = 81,450.95 : x
  2. Step 2: Convert to fraction form
    150,361.32/207,498.79 = 81,450.95/x
  3. Step 3: Cross multiply
    150,361.32x = 207,498.79 × 81,450.95
  4. Step 4: Simplify right side
    150,361.32x = 16,900,973,569.35
  5. Step 5: Solve for x
    x = 16,900,973,569.35/150,361.32
  6. Step 6: Final answer
    x = 112,402.40

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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.