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Finding the Fourth Proportional to 146,704.80, 219,862.80 and 129,986.40

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Solution

The fourth proportional to 146,704.80, 219,862.80 and 129,986.40 is: 194,807.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,704.80 : 219,862.80 = 129,986.40 : x
  2. Step 2: Convert to fraction form
    146,704.80/219,862.80 = 129,986.40/x
  3. Step 3: Cross multiply
    146,704.80x = 219,862.80 × 129,986.40
  4. Step 4: Simplify right side
    146,704.80x = 28,579,173,865.92
  5. Step 5: Solve for x
    x = 28,579,173,865.92/146,704.80
  6. Step 6: Final answer
    x = 194,807.35

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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.