Home / 132,728.80-183,152.46-81,733.36

Finding the Fourth Proportional to 132,728.80, 183,152.46 and 81,733.36

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Solution

The fourth proportional to 132,728.80, 183,152.46 and 81,733.36 is: 112,783.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,728.80 : 183,152.46 = 81,733.36 : x
  2. Step 2: Convert to fraction form
    132,728.80/183,152.46 = 81,733.36/x
  3. Step 3: Cross multiply
    132,728.80x = 183,152.46 × 81,733.36
  4. Step 4: Simplify right side
    132,728.80x = 14,969,665,948.07
  5. Step 5: Solve for x
    x = 14,969,665,948.07/132,728.80
  6. Step 6: Final answer
    x = 112,783.86

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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.