Home / 188,515.90-260,152.80-103,638.43

Finding the Fourth Proportional to 188,515.90, 260,152.80 and 103,638.43

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Solution

The fourth proportional to 188,515.90, 260,152.80 and 103,638.43 is: 143,021.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,515.90 : 260,152.80 = 103,638.43 : x
  2. Step 2: Convert to fraction form
    188,515.90/260,152.80 = 103,638.43/x
  3. Step 3: Cross multiply
    188,515.90x = 260,152.80 × 103,638.43
  4. Step 4: Simplify right side
    188,515.90x = 26,961,827,752.10
  5. Step 5: Solve for x
    x = 26,961,827,752.10/188,515.90
  6. Step 6: Final answer
    x = 143,021.51

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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.