Home / 101,938.11-140,669.80-56,619.01

Finding the Fourth Proportional to 101,938.11, 140,669.80 and 56,619.01

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Solution

The fourth proportional to 101,938.11, 140,669.80 and 56,619.01 is: 78,131.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,938.11 : 140,669.80 = 56,619.01 : x
  2. Step 2: Convert to fraction form
    101,938.11/140,669.80 = 56,619.01/x
  3. Step 3: Cross multiply
    101,938.11x = 140,669.80 × 56,619.01
  4. Step 4: Simplify right side
    101,938.11x = 7,964,584,812.90
  5. Step 5: Solve for x
    x = 7,964,584,812.90/101,938.11
  6. Step 6: Final answer
    x = 78,131.57

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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.