Home / 149,379.04-206,140.44-81,396.50

Finding the Fourth Proportional to 149,379.04, 206,140.44 and 81,396.50

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Solution

The fourth proportional to 149,379.04, 206,140.44 and 81,396.50 is: 112,325.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,379.04 : 206,140.44 = 81,396.50 : x
  2. Step 2: Convert to fraction form
    149,379.04/206,140.44 = 81,396.50/x
  3. Step 3: Cross multiply
    149,379.04x = 206,140.44 × 81,396.50
  4. Step 4: Simplify right side
    149,379.04x = 16,779,109,598.99
  5. Step 5: Solve for x
    x = 16,779,109,598.99/149,379.04
  6. Step 6: Final answer
    x = 112,325.73

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1.5x scale

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.