Home / 109,877.20-164,815.80-72,941.20

Finding the Fourth Proportional to 109,877.20, 164,815.80 and 72,941.20

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Solution

The fourth proportional to 109,877.20, 164,815.80 and 72,941.20 is: 109,411.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,877.20 : 164,815.80 = 72,941.20 : x
  2. Step 2: Convert to fraction form
    109,877.20/164,815.80 = 72,941.20/x
  3. Step 3: Cross multiply
    109,877.20x = 164,815.80 × 72,941.20
  4. Step 4: Simplify right side
    109,877.20x = 12,021,862,230.96
  5. Step 5: Solve for x
    x = 12,021,862,230.96/109,877.20
  6. Step 6: Final answer
    x = 109,411.80

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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.