Home / 147,028.80-220,544.90-139,858.16

Finding the Fourth Proportional to 147,028.80, 220,544.90 and 139,858.16

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Solution

The fourth proportional to 147,028.80, 220,544.90 and 139,858.16 is: 209,788.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,028.80 : 220,544.90 = 139,858.16 : x
  2. Step 2: Convert to fraction form
    147,028.80/220,544.90 = 139,858.16/x
  3. Step 3: Cross multiply
    147,028.80x = 220,544.90 × 139,858.16
  4. Step 4: Simplify right side
    147,028.80x = 30,845,003,911.38
  5. Step 5: Solve for x
    x = 30,845,003,911.38/147,028.80
  6. Step 6: Final answer
    x = 209,788.86

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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.