Home / 136,970.93-188,985.35-80,371.37

Finding the Fourth Proportional to 136,970.93, 188,985.35 and 80,371.37

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Solution

The fourth proportional to 136,970.93, 188,985.35 and 80,371.37 is: 110,892.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,970.93 : 188,985.35 = 80,371.37 : x
  2. Step 2: Convert to fraction form
    136,970.93/188,985.35 = 80,371.37/x
  3. Step 3: Cross multiply
    136,970.93x = 188,985.35 × 80,371.37
  4. Step 4: Simplify right side
    136,970.93x = 15,189,011,087.57
  5. Step 5: Solve for x
    x = 15,189,011,087.57/136,970.93
  6. Step 6: Final answer
    x = 110,892.22

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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.