Home / 100,787.16-139,092.03-57,773.82

Finding the Fourth Proportional to 100,787.16, 139,092.03 and 57,773.82

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Solution

The fourth proportional to 100,787.16, 139,092.03 and 57,773.82 is: 79,731.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,787.16 : 139,092.03 = 57,773.82 : x
  2. Step 2: Convert to fraction form
    100,787.16/139,092.03 = 57,773.82/x
  3. Step 3: Cross multiply
    100,787.16x = 139,092.03 × 57,773.82
  4. Step 4: Simplify right side
    100,787.16x = 8,035,877,904.65
  5. Step 5: Solve for x
    x = 8,035,877,904.65/100,787.16
  6. Step 6: Final answer
    x = 79,731.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.