Home / 223,106.29-307,884.96-121,129.72

Finding the Fourth Proportional to 223,106.29, 307,884.96 and 121,129.72

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Solution

The fourth proportional to 223,106.29, 307,884.96 and 121,129.72 is: 167,158.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,106.29 : 307,884.96 = 121,129.72 : x
  2. Step 2: Convert to fraction form
    223,106.29/307,884.96 = 121,129.72/x
  3. Step 3: Cross multiply
    223,106.29x = 307,884.96 × 121,129.72
  4. Step 4: Simplify right side
    223,106.29x = 37,294,018,997.01
  5. Step 5: Solve for x
    x = 37,294,018,997.01/223,106.29
  6. Step 6: Final answer
    x = 167,158.08

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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.