Home / 104,128.18-143,696.98-56,381.56

Finding the Fourth Proportional to 104,128.18, 143,696.98 and 56,381.56

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Solution

The fourth proportional to 104,128.18, 143,696.98 and 56,381.56 is: 77,806.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,128.18 : 143,696.98 = 56,381.56 : x
  2. Step 2: Convert to fraction form
    104,128.18/143,696.98 = 56,381.56/x
  3. Step 3: Cross multiply
    104,128.18x = 143,696.98 × 56,381.56
  4. Step 4: Simplify right side
    104,128.18x = 8,101,859,899.69
  5. Step 5: Solve for x
    x = 8,101,859,899.69/104,128.18
  6. Step 6: Final answer
    x = 77,806.60

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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.