Home / 131,215.85-181,165.02-100,947.77

Finding the Fourth Proportional to 131,215.85, 181,165.02 and 100,947.77

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Solution

The fourth proportional to 131,215.85, 181,165.02 and 100,947.77 is: 139,374.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,215.85 : 181,165.02 = 100,947.77 : x
  2. Step 2: Convert to fraction form
    131,215.85/181,165.02 = 100,947.77/x
  3. Step 3: Cross multiply
    131,215.85x = 181,165.02 × 100,947.77
  4. Step 4: Simplify right side
    131,215.85x = 18,288,203,865.18
  5. Step 5: Solve for x
    x = 18,288,203,865.18/131,215.85
  6. Step 6: Final answer
    x = 139,374.97

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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.