Home / 104,172.21-143,756.64-56,422.71

Finding the Fourth Proportional to 104,172.21, 143,756.64 and 56,422.71

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Solution

The fourth proportional to 104,172.21, 143,756.64 and 56,422.71 is: 77,862.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,172.21 : 143,756.64 = 56,422.71 : x
  2. Step 2: Convert to fraction form
    104,172.21/143,756.64 = 56,422.71/x
  3. Step 3: Cross multiply
    104,172.21x = 143,756.64 × 56,422.71
  4. Step 4: Simplify right side
    104,172.21x = 8,111,139,209.29
  5. Step 5: Solve for x
    x = 8,111,139,209.29/104,172.21
  6. Step 6: Final answer
    x = 77,862.79

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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.