Home / 105,181.29-157,655.06-80,138.77

Finding the Fourth Proportional to 105,181.29, 157,655.06 and 80,138.77

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Solution

The fourth proportional to 105,181.29, 157,655.06 and 80,138.77 is: 120,119.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,181.29 : 157,655.06 = 80,138.77 : x
  2. Step 2: Convert to fraction form
    105,181.29/157,655.06 = 80,138.77/x
  3. Step 3: Cross multiply
    105,181.29x = 157,655.06 × 80,138.77
  4. Step 4: Simplify right side
    105,181.29x = 12,634,283,435.96
  5. Step 5: Solve for x
    x = 12,634,283,435.96/105,181.29
  6. Step 6: Final answer
    x = 120,119.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.