Home / 188,303.15-259,871.07-103,421.09

Finding the Fourth Proportional to 188,303.15, 259,871.07 and 103,421.09

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Solution

The fourth proportional to 188,303.15, 259,871.07 and 103,421.09 is: 142,728.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,303.15 : 259,871.07 = 103,421.09 : x
  2. Step 2: Convert to fraction form
    188,303.15/259,871.07 = 103,421.09/x
  3. Step 3: Cross multiply
    188,303.15x = 259,871.07 × 103,421.09
  4. Step 4: Simplify right side
    188,303.15x = 26,876,148,019.51
  5. Step 5: Solve for x
    x = 26,876,148,019.51/188,303.15
  6. Step 6: Final answer
    x = 142,728.09

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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.