Home / 223,109.66-307,895.04-121,135.12

Finding the Fourth Proportional to 223,109.66, 307,895.04 and 121,135.12

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Solution

The fourth proportional to 223,109.66, 307,895.04 and 121,135.12 is: 167,168.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,109.66 : 307,895.04 = 121,135.12 : x
  2. Step 2: Convert to fraction form
    223,109.66/307,895.04 = 121,135.12/x
  3. Step 3: Cross multiply
    223,109.66x = 307,895.04 × 121,135.12
  4. Step 4: Simplify right side
    223,109.66x = 37,296,901,848.07
  5. Step 5: Solve for x
    x = 37,296,901,848.07/223,109.66
  6. Step 6: Final answer
    x = 167,168.47

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1.5x scale

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.