Home / 189,419.75-284,207.52-139,075.85

Finding the Fourth Proportional to 189,419.75, 284,207.52 and 139,075.85

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Solution

The fourth proportional to 189,419.75, 284,207.52 and 139,075.85 is: 208,670.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,419.75 : 284,207.52 = 139,075.85 : x
  2. Step 2: Convert to fraction form
    189,419.75/284,207.52 = 139,075.85/x
  3. Step 3: Cross multiply
    189,419.75x = 284,207.52 × 139,075.85
  4. Step 4: Simplify right side
    189,419.75x = 39,526,400,999.35
  5. Step 5: Solve for x
    x = 39,526,400,999.35/189,419.75
  6. Step 6: Final answer
    x = 208,670.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.