Home / 136,972.07-205,504.26-86,312.27

Finding the Fourth Proportional to 136,972.07, 205,504.26 and 86,312.27

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Solution

The fourth proportional to 136,972.07, 205,504.26 and 86,312.27 is: 129,497.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,972.07 : 205,504.26 = 86,312.27 : x
  2. Step 2: Convert to fraction form
    136,972.07/205,504.26 = 86,312.27/x
  3. Step 3: Cross multiply
    136,972.07x = 205,504.26 × 86,312.27
  4. Step 4: Simplify right side
    136,972.07x = 17,737,539,175.27
  5. Step 5: Solve for x
    x = 17,737,539,175.27/136,972.07
  6. Step 6: Final answer
    x = 129,497.49

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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.