Home / 188,515.77-260,152.61-103,638.30

Finding the Fourth Proportional to 188,515.77, 260,152.61 and 103,638.30

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Solution

The fourth proportional to 188,515.77, 260,152.61 and 103,638.30 is: 143,021.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,515.77 : 260,152.61 = 103,638.30 : x
  2. Step 2: Convert to fraction form
    188,515.77/260,152.61 = 103,638.30/x
  3. Step 3: Cross multiply
    188,515.77x = 260,152.61 × 103,638.30
  4. Step 4: Simplify right side
    188,515.77x = 26,961,774,240.96
  5. Step 5: Solve for x
    x = 26,961,774,240.96/188,515.77
  6. Step 6: Final answer
    x = 143,021.32

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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.