Home / 102,129.60-140,936.81-56,806.62

Finding the Fourth Proportional to 102,129.60, 140,936.81 and 56,806.62

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Solution

The fourth proportional to 102,129.60, 140,936.81 and 56,806.62 is: 78,392.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,129.60 : 140,936.81 = 56,806.62 : x
  2. Step 2: Convert to fraction form
    102,129.60/140,936.81 = 56,806.62/x
  3. Step 3: Cross multiply
    102,129.60x = 140,936.81 × 56,806.62
  4. Step 4: Simplify right side
    102,129.60x = 8,006,143,809.68
  5. Step 5: Solve for x
    x = 8,006,143,809.68/102,129.60
  6. Step 6: Final answer
    x = 78,392.00

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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.