Home / 136,971.07-205,502.76-86,311.27

Finding the Fourth Proportional to 136,971.07, 205,502.76 and 86,311.27

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Solution

The fourth proportional to 136,971.07, 205,502.76 and 86,311.27 is: 129,495.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,971.07 : 205,502.76 = 86,311.27 : x
  2. Step 2: Convert to fraction form
    136,971.07/205,502.76 = 86,311.27/x
  3. Step 3: Cross multiply
    136,971.07x = 205,502.76 × 86,311.27
  4. Step 4: Simplify right side
    136,971.07x = 17,737,203,176.59
  5. Step 5: Solve for x
    x = 17,737,203,176.59/136,971.07
  6. Step 6: Final answer
    x = 129,495.98

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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.