Home / 106,518.29-159,615.78-78,303.94

Finding the Fourth Proportional to 106,518.29, 159,615.78 and 78,303.94

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Solution

The fourth proportional to 106,518.29, 159,615.78 and 78,303.94 is: 117,337.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,518.29 : 159,615.78 = 78,303.94 : x
  2. Step 2: Convert to fraction form
    106,518.29/159,615.78 = 78,303.94/x
  3. Step 3: Cross multiply
    106,518.29x = 159,615.78 × 78,303.94
  4. Step 4: Simplify right side
    106,518.29x = 12,498,543,767.49
  5. Step 5: Solve for x
    x = 12,498,543,767.49/106,518.29
  6. Step 6: Final answer
    x = 117,337.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.