Home / 145,490.88-200,775.36-81,828.64

Finding the Fourth Proportional to 145,490.88, 200,775.36 and 81,828.64

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Solution

The fourth proportional to 145,490.88, 200,775.36 and 81,828.64 is: 112,922.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,490.88 : 200,775.36 = 81,828.64 : x
  2. Step 2: Convert to fraction form
    145,490.88/200,775.36 = 81,828.64/x
  3. Step 3: Cross multiply
    145,490.88x = 200,775.36 × 81,828.64
  4. Step 4: Simplify right side
    145,490.88x = 16,429,174,654.31
  5. Step 5: Solve for x
    x = 16,429,174,654.31/145,490.88
  6. Step 6: Final answer
    x = 112,922.37

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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.