Home / 114,945.72-158,535.10-78,668.64

Finding the Fourth Proportional to 114,945.72, 158,535.10 and 78,668.64

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Solution

The fourth proportional to 114,945.72, 158,535.10 and 78,668.64 is: 108,501.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,945.72 : 158,535.10 = 78,668.64 : x
  2. Step 2: Convert to fraction form
    114,945.72/158,535.10 = 78,668.64/x
  3. Step 3: Cross multiply
    114,945.72x = 158,535.10 × 78,668.64
  4. Step 4: Simplify right side
    114,945.72x = 12,471,740,709.26
  5. Step 5: Solve for x
    x = 12,471,740,709.26/114,945.72
  6. Step 6: Final answer
    x = 108,501.13

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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.