Home / 137,755.05-190,121.16-76,515

Finding the Fourth Proportional to 137,755.05, 190,121.16 and 76,515

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Solution

The fourth proportional to 137,755.05, 190,121.16 and 76,515 is: 105,601.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,755.05 : 190,121.16 = 76,515 : x
  2. Step 2: Convert to fraction form
    137,755.05/190,121.16 = 76,515/x
  3. Step 3: Cross multiply
    137,755.05x = 190,121.16 × 76,515
  4. Step 4: Simplify right side
    137,755.05x = 14,547,120,557.40
  5. Step 5: Solve for x
    x = 14,547,120,557.40/137,755.05
  6. Step 6: Final answer
    x = 105,601.36

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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.