Home / 102,511.34-141,465.71-57,189.32

Finding the Fourth Proportional to 102,511.34, 141,465.71 and 57,189.32

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Solution

The fourth proportional to 102,511.34, 141,465.71 and 57,189.32 is: 78,921.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,511.34 : 141,465.71 = 57,189.32 : x
  2. Step 2: Convert to fraction form
    102,511.34/141,465.71 = 57,189.32/x
  3. Step 3: Cross multiply
    102,511.34x = 141,465.71 × 57,189.32
  4. Step 4: Simplify right side
    102,511.34x = 8,090,326,764.94
  5. Step 5: Solve for x
    x = 8,090,326,764.94/102,511.34
  6. Step 6: Final answer
    x = 78,921.29

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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.