Home / 137,810.16-190,180-77,393.84

Finding the Fourth Proportional to 137,810.16, 190,180 and 77,393.84

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Solution

The fourth proportional to 137,810.16, 190,180 and 77,393.84 is: 106,804.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,810.16 : 190,180 = 77,393.84 : x
  2. Step 2: Convert to fraction form
    137,810.16/190,180 = 77,393.84/x
  3. Step 3: Cross multiply
    137,810.16x = 190,180 × 77,393.84
  4. Step 4: Simplify right side
    137,810.16x = 14,718,760,491.20
  5. Step 5: Solve for x
    x = 14,718,760,491.20/137,810.16
  6. Step 6: Final answer
    x = 106,804.61

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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.