Home / 102,888.21-141,979.05-57,558.36

Finding the Fourth Proportional to 102,888.21, 141,979.05 and 57,558.36

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Solution

The fourth proportional to 102,888.21, 141,979.05 and 57,558.36 is: 79,426.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,888.21 : 141,979.05 = 57,558.36 : x
  2. Step 2: Convert to fraction form
    102,888.21/141,979.05 = 57,558.36/x
  3. Step 3: Cross multiply
    102,888.21x = 141,979.05 × 57,558.36
  4. Step 4: Simplify right side
    102,888.21x = 8,172,081,272.36
  5. Step 5: Solve for x
    x = 8,172,081,272.36/102,888.21
  6. Step 6: Final answer
    x = 79,426.80

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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.