Home / 189,210.39-261,112.37-103,168.67

Finding the Fourth Proportional to 189,210.39, 261,112.37 and 103,168.67

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Solution

The fourth proportional to 189,210.39, 261,112.37 and 103,168.67 is: 142,373.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,210.39 : 261,112.37 = 103,168.67 : x
  2. Step 2: Convert to fraction form
    189,210.39/261,112.37 = 103,168.67/x
  3. Step 3: Cross multiply
    189,210.39x = 261,112.37 × 103,168.67
  4. Step 4: Simplify right side
    189,210.39x = 26,938,615,933.45
  5. Step 5: Solve for x
    x = 26,938,615,933.45/189,210.39
  6. Step 6: Final answer
    x = 142,373.87

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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.