Home / 189,209.39-261,110.99-103,167.67

Finding the Fourth Proportional to 189,209.39, 261,110.99 and 103,167.67

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Solution

The fourth proportional to 189,209.39, 261,110.99 and 103,167.67 is: 142,372.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,209.39 : 261,110.99 = 103,167.67 : x
  2. Step 2: Convert to fraction form
    189,209.39/261,110.99 = 103,167.67/x
  3. Step 3: Cross multiply
    189,209.39x = 261,110.99 × 103,167.67
  4. Step 4: Simplify right side
    189,209.39x = 26,938,212,054.84
  5. Step 5: Solve for x
    x = 26,938,212,054.84/189,209.39
  6. Step 6: Final answer
    x = 142,372.49

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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.