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Finding the Fourth Proportional to 159,361.68, 239,043.88 and 45,509.18

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Solution

The fourth proportional to 159,361.68, 239,043.88 and 45,509.18 is: 68,264.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,361.68 : 239,043.88 = 45,509.18 : x
  2. Step 2: Convert to fraction form
    159,361.68/239,043.88 = 45,509.18/x
  3. Step 3: Cross multiply
    159,361.68x = 239,043.88 × 45,509.18
  4. Step 4: Simplify right side
    159,361.68x = 10,878,690,962.82
  5. Step 5: Solve for x
    x = 10,878,690,962.82/159,361.68
  6. Step 6: Final answer
    x = 68,264.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.