Home / 102,979.60-141,990.77-82,545.32

Finding the Fourth Proportional to 102,979.60, 141,990.77 and 82,545.32

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Solution

The fourth proportional to 102,979.60, 141,990.77 and 82,545.32 is: 113,815.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,979.60 : 141,990.77 = 82,545.32 : x
  2. Step 2: Convert to fraction form
    102,979.60/141,990.77 = 82,545.32/x
  3. Step 3: Cross multiply
    102,979.60x = 141,990.77 × 82,545.32
  4. Step 4: Simplify right side
    102,979.60x = 11,720,674,108.04
  5. Step 5: Solve for x
    x = 11,720,674,108.04/102,979.60
  6. Step 6: Final answer
    x = 113,815.50

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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.