Home / 142,895.08-197,177.08-78,347.33

Finding the Fourth Proportional to 142,895.08, 197,177.08 and 78,347.33

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Solution

The fourth proportional to 142,895.08, 197,177.08 and 78,347.33 is: 108,109.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,895.08 : 197,177.08 = 78,347.33 : x
  2. Step 2: Convert to fraction form
    142,895.08/197,177.08 = 78,347.33/x
  3. Step 3: Cross multiply
    142,895.08x = 197,177.08 × 78,347.33
  4. Step 4: Simplify right side
    142,895.08x = 15,448,296,377.57
  5. Step 5: Solve for x
    x = 15,448,296,377.57/142,895.08
  6. Step 6: Final answer
    x = 108,109.37

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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.