Home / 137,771.28-190,135.35-77,345.89

Finding the Fourth Proportional to 137,771.28, 190,135.35 and 77,345.89

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Solution

The fourth proportional to 137,771.28, 190,135.35 and 77,345.89 is: 106,743.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,771.28 : 190,135.35 = 77,345.89 : x
  2. Step 2: Convert to fraction form
    137,771.28/190,135.35 = 77,345.89/x
  3. Step 3: Cross multiply
    137,771.28x = 190,135.35 × 77,345.89
  4. Step 4: Simplify right side
    137,771.28x = 14,706,187,390.87
  5. Step 5: Solve for x
    x = 14,706,187,390.87/137,771.28
  6. Step 6: Final answer
    x = 106,743.49

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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.