Home / 189,140.40-261,048.44-121,186.67

Finding the Fourth Proportional to 189,140.40, 261,048.44 and 121,186.67

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Solution

The fourth proportional to 189,140.40, 261,048.44 and 121,186.67 is: 167,259.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,140.40 : 261,048.44 = 121,186.67 : x
  2. Step 2: Convert to fraction form
    189,140.40/261,048.44 = 121,186.67/x
  3. Step 3: Cross multiply
    189,140.40x = 261,048.44 × 121,186.67
  4. Step 4: Simplify right side
    189,140.40x = 31,635,590,150.02
  5. Step 5: Solve for x
    x = 31,635,590,150.02/189,140.40
  6. Step 6: Final answer
    x = 167,259.82

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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.