Home / 137,768.89-190,120.97-77,339.65

Finding the Fourth Proportional to 137,768.89, 190,120.97 and 77,339.65

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Solution

The fourth proportional to 137,768.89, 190,120.97 and 77,339.65 is: 106,728.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,768.89 : 190,120.97 = 77,339.65 : x
  2. Step 2: Convert to fraction form
    137,768.89/190,120.97 = 77,339.65/x
  3. Step 3: Cross multiply
    137,768.89x = 190,120.97 × 77,339.65
  4. Step 4: Simplify right side
    137,768.89x = 14,703,889,277.46
  5. Step 5: Solve for x
    x = 14,703,889,277.46/137,768.89
  6. Step 6: Final answer
    x = 106,728.66

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1.5x scale

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.