Home / 136,988,787.66-205,451,737.83-81,672,274.95

Finding the Fourth Proportional to 136,988,787.66, 205,451,737.83 and 81,672,274.95

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Solution

The fourth proportional to 136,988,787.66, 205,451,737.83 and 81,672,274.95 is: 122,489,665.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,988,787.66 : 205,451,737.83 = 81,672,274.95 : x
  2. Step 2: Convert to fraction form
    136,988,787.66/205,451,737.83 = 81,672,274.95/x
  3. Step 3: Cross multiply
    136,988,787.66x = 205,451,737.83 × 81,672,274.95
  4. Step 4: Simplify right side
    136,988,787.66x = 16,779,710,821,007,078
  5. Step 5: Solve for x
    x = 16,779,710,821,007,078/136,988,787.66
  6. Step 6: Final answer
    x = 122,489,665.82

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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.