Home / 102,158.28-140,983.74-56,836.44

Finding the Fourth Proportional to 102,158.28, 140,983.74 and 56,836.44

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Solution

The fourth proportional to 102,158.28, 140,983.74 and 56,836.44 is: 78,437.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,158.28 : 140,983.74 = 56,836.44 : x
  2. Step 2: Convert to fraction form
    102,158.28/140,983.74 = 56,836.44/x
  3. Step 3: Cross multiply
    102,158.28x = 140,983.74 × 56,836.44
  4. Step 4: Simplify right side
    102,158.28x = 8,013,013,879.49
  5. Step 5: Solve for x
    x = 8,013,013,879.49/102,158.28
  6. Step 6: Final answer
    x = 78,437.24

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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.