Home / 189,503.19-261,509.40-104,618.43

Finding the Fourth Proportional to 189,503.19, 261,509.40 and 104,618.43

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Solution

The fourth proportional to 189,503.19, 261,509.40 and 104,618.43 is: 144,370.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,503.19 : 261,509.40 = 104,618.43 : x
  2. Step 2: Convert to fraction form
    189,503.19/261,509.40 = 104,618.43/x
  3. Step 3: Cross multiply
    189,503.19x = 261,509.40 × 104,618.43
  4. Step 4: Simplify right side
    189,503.19x = 27,358,702,858.24
  5. Step 5: Solve for x
    x = 27,358,702,858.24/189,503.19
  6. Step 6: Final answer
    x = 144,370.67

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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.