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Finding the Fourth Proportional to 131,603.54, 197,361.16 and 42,836.18

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Solution

The fourth proportional to 131,603.54, 197,361.16 and 42,836.18 is: 64,239.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,603.54 : 197,361.16 = 42,836.18 : x
  2. Step 2: Convert to fraction form
    131,603.54/197,361.16 = 42,836.18/x
  3. Step 3: Cross multiply
    131,603.54x = 197,361.16 × 42,836.18
  4. Step 4: Simplify right side
    131,603.54x = 8,454,197,080.87
  5. Step 5: Solve for x
    x = 8,454,197,080.87/131,603.54
  6. Step 6: Final answer
    x = 64,239.89

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1.5x scale

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.