Home / 223,106.15-307,884.77-121,129.61

Finding the Fourth Proportional to 223,106.15, 307,884.77 and 121,129.61

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Solution

The fourth proportional to 223,106.15, 307,884.77 and 121,129.61 is: 167,157.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,106.15 : 307,884.77 = 121,129.61 : x
  2. Step 2: Convert to fraction form
    223,106.15/307,884.77 = 121,129.61/x
  3. Step 3: Cross multiply
    223,106.15x = 307,884.77 × 121,129.61
  4. Step 4: Simplify right side
    223,106.15x = 37,293,960,878.44
  5. Step 5: Solve for x
    x = 37,293,960,878.44/223,106.15
  6. Step 6: Final answer
    x = 167,157.93

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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.