Home / 102,161.94-140,971.23-56,828.48

Finding the Fourth Proportional to 102,161.94, 140,971.23 and 56,828.48

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Solution

The fourth proportional to 102,161.94, 140,971.23 and 56,828.48 is: 78,416.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,161.94 : 140,971.23 = 56,828.48 : x
  2. Step 2: Convert to fraction form
    102,161.94/140,971.23 = 56,828.48/x
  3. Step 3: Cross multiply
    102,161.94x = 140,971.23 × 56,828.48
  4. Step 4: Simplify right side
    102,161.94x = 8,011,180,019.77
  5. Step 5: Solve for x
    x = 8,011,180,019.77/102,161.94
  6. Step 6: Final answer
    x = 78,416.48

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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.