Home / 149,265.82-205,981.39-81,281.30

Finding the Fourth Proportional to 149,265.82, 205,981.39 and 81,281.30

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Solution

The fourth proportional to 149,265.82, 205,981.39 and 81,281.30 is: 112,165.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,265.82 : 205,981.39 = 81,281.30 : x
  2. Step 2: Convert to fraction form
    149,265.82/205,981.39 = 81,281.30/x
  3. Step 3: Cross multiply
    149,265.82x = 205,981.39 × 81,281.30
  4. Step 4: Simplify right side
    149,265.82x = 16,742,435,155.01
  5. Step 5: Solve for x
    x = 16,742,435,155.01/149,265.82
  6. Step 6: Final answer
    x = 112,165.23

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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.