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Finding the Fourth Proportional to 134,706.70, 201,797.61 and 81,985.42

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Solution

The fourth proportional to 134,706.70, 201,797.61 and 81,985.42 is: 122,818.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,706.70 : 201,797.61 = 81,985.42 : x
  2. Step 2: Convert to fraction form
    134,706.70/201,797.61 = 81,985.42/x
  3. Step 3: Cross multiply
    134,706.70x = 201,797.61 × 81,985.42
  4. Step 4: Simplify right side
    134,706.70x = 16,544,461,810.85
  5. Step 5: Solve for x
    x = 16,544,461,810.85/134,706.70
  6. Step 6: Final answer
    x = 122,818.40

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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.