Home / 137,986.35-190,418.89-76,730.10

Finding the Fourth Proportional to 137,986.35, 190,418.89 and 76,730.10

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Solution

The fourth proportional to 137,986.35, 190,418.89 and 76,730.10 is: 105,886.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,986.35 : 190,418.89 = 76,730.10 : x
  2. Step 2: Convert to fraction form
    137,986.35/190,418.89 = 76,730.10/x
  3. Step 3: Cross multiply
    137,986.35x = 190,418.89 × 76,730.10
  4. Step 4: Simplify right side
    137,986.35x = 14,610,860,471.59
  5. Step 5: Solve for x
    x = 14,610,860,471.59/137,986.35
  6. Step 6: Final answer
    x = 105,886.27

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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.