Home / 102,168.19-140,979.72-56,835.46

Finding the Fourth Proportional to 102,168.19, 140,979.72 and 56,835.46

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Solution

The fourth proportional to 102,168.19, 140,979.72 and 56,835.46 is: 78,426.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,168.19 : 140,979.72 = 56,835.46 : x
  2. Step 2: Convert to fraction form
    102,168.19/140,979.72 = 56,835.46/x
  3. Step 3: Cross multiply
    102,168.19x = 140,979.72 × 56,835.46
  4. Step 4: Simplify right side
    102,168.19x = 8,012,647,236.87
  5. Step 5: Solve for x
    x = 8,012,647,236.87/102,168.19
  6. Step 6: Final answer
    x = 78,426.05

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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.