Home / 149,019.46-205,646.37-83,608.40

Finding the Fourth Proportional to 149,019.46, 205,646.37 and 83,608.40

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Solution

The fourth proportional to 149,019.46, 205,646.37 and 83,608.40 is: 115,379.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,019.46 : 205,646.37 = 83,608.40 : x
  2. Step 2: Convert to fraction form
    149,019.46/205,646.37 = 83,608.40/x
  3. Step 3: Cross multiply
    149,019.46x = 205,646.37 × 83,608.40
  4. Step 4: Simplify right side
    149,019.46x = 17,193,763,961.51
  5. Step 5: Solve for x
    x = 17,193,763,961.51/149,019.46
  6. Step 6: Final answer
    x = 115,379.32

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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.