Home / 149,835.03-206,778.63-86,172.87

Finding the Fourth Proportional to 149,835.03, 206,778.63 and 86,172.87

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Solution

The fourth proportional to 149,835.03, 206,778.63 and 86,172.87 is: 118,922.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,835.03 : 206,778.63 = 86,172.87 : x
  2. Step 2: Convert to fraction form
    149,835.03/206,778.63 = 86,172.87/x
  3. Step 3: Cross multiply
    149,835.03x = 206,778.63 × 86,172.87
  4. Step 4: Simplify right side
    149,835.03x = 17,818,708,001.77
  5. Step 5: Solve for x
    x = 17,818,708,001.77/149,835.03
  6. Step 6: Final answer
    x = 118,922.18

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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.