Home / 223,142.72-307,937.32-121,168.40

Finding the Fourth Proportional to 223,142.72, 307,937.32 and 121,168.40

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Solution

The fourth proportional to 223,142.72, 307,937.32 and 121,168.40 is: 167,212.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,142.72 : 307,937.32 = 121,168.40 : x
  2. Step 2: Convert to fraction form
    223,142.72/307,937.32 = 121,168.40/x
  3. Step 3: Cross multiply
    223,142.72x = 307,937.32 × 121,168.40
  4. Step 4: Simplify right side
    223,142.72x = 37,312,272,364.69
  5. Step 5: Solve for x
    x = 37,312,272,364.69/223,142.72
  6. Step 6: Final answer
    x = 167,212.59

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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.