Home / 140,178.09-193,438.44-76,503.54

Finding the Fourth Proportional to 140,178.09, 193,438.44 and 76,503.54

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Solution

The fourth proportional to 140,178.09, 193,438.44 and 76,503.54 is: 105,570.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,178.09 : 193,438.44 = 76,503.54 : x
  2. Step 2: Convert to fraction form
    140,178.09/193,438.44 = 76,503.54/x
  3. Step 3: Cross multiply
    140,178.09x = 193,438.44 × 76,503.54
  4. Step 4: Simplify right side
    140,178.09x = 14,798,725,432.08
  5. Step 5: Solve for x
    x = 14,798,725,432.08/140,178.09
  6. Step 6: Final answer
    x = 105,570.89

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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.