Home / 119,629.56-163,893.30-115,145.40

Finding the Fourth Proportional to 119,629.56, 163,893.30 and 115,145.40

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Solution

The fourth proportional to 119,629.56, 163,893.30 and 115,145.40 is: 157,749.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,629.56 : 163,893.30 = 115,145.40 : x
  2. Step 2: Convert to fraction form
    119,629.56/163,893.30 = 115,145.40/x
  3. Step 3: Cross multiply
    119,629.56x = 163,893.30 × 115,145.40
  4. Step 4: Simplify right side
    119,629.56x = 18,871,559,585.82
  5. Step 5: Solve for x
    x = 18,871,559,585.82/119,629.56
  6. Step 6: Final answer
    x = 157,749.97

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.