Home / 131,374.64-181,295.40-80,378.48

Finding the Fourth Proportional to 131,374.64, 181,295.40 and 80,378.48

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Solution

The fourth proportional to 131,374.64, 181,295.40 and 80,378.48 is: 110,921.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,374.64 : 181,295.40 = 80,378.48 : x
  2. Step 2: Convert to fraction form
    131,374.64/181,295.40 = 80,378.48/x
  3. Step 3: Cross multiply
    131,374.64x = 181,295.40 × 80,378.48
  4. Step 4: Simplify right side
    131,374.64x = 14,572,248,682.99
  5. Step 5: Solve for x
    x = 14,572,248,682.99/131,374.64
  6. Step 6: Final answer
    x = 110,921.32

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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.