Home / 210,640.10-290,683.42-115,146.76

Finding the Fourth Proportional to 210,640.10, 290,683.42 and 115,146.76

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Solution

The fourth proportional to 210,640.10, 290,683.42 and 115,146.76 is: 158,902.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,640.10 : 290,683.42 = 115,146.76 : x
  2. Step 2: Convert to fraction form
    210,640.10/290,683.42 = 115,146.76/x
  3. Step 3: Cross multiply
    210,640.10x = 290,683.42 × 115,146.76
  4. Step 4: Simplify right side
    210,640.10x = 33,471,253,998.72
  5. Step 5: Solve for x
    x = 33,471,253,998.72/210,640.10
  6. Step 6: Final answer
    x = 158,902.57

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1.5x scale

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.