Home / 149,264.19-205,977.69-81,280.89

Finding the Fourth Proportional to 149,264.19, 205,977.69 and 81,280.89

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Solution

The fourth proportional to 149,264.19, 205,977.69 and 81,280.89 is: 112,163.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,264.19 : 205,977.69 = 81,280.89 : x
  2. Step 2: Convert to fraction form
    149,264.19/205,977.69 = 81,280.89/x
  3. Step 3: Cross multiply
    149,264.19x = 205,977.69 × 81,280.89
  4. Step 4: Simplify right side
    149,264.19x = 16,742,049,963.34
  5. Step 5: Solve for x
    x = 16,742,049,963.34/149,264.19
  6. Step 6: Final answer
    x = 112,163.88

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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.