Home / 188,488.12-260,113.80-103,603.36

Finding the Fourth Proportional to 188,488.12, 260,113.80 and 103,603.36

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Solution

The fourth proportional to 188,488.12, 260,113.80 and 103,603.36 is: 142,972.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,488.12 : 260,113.80 = 103,603.36 : x
  2. Step 2: Convert to fraction form
    188,488.12/260,113.80 = 103,603.36/x
  3. Step 3: Cross multiply
    188,488.12x = 260,113.80 × 103,603.36
  4. Step 4: Simplify right side
    188,488.12x = 26,948,663,662.37
  5. Step 5: Solve for x
    x = 26,948,663,662.37/188,488.12
  6. Step 6: Final answer
    x = 142,972.74

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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.