Home / 145,889.28-218,771.96-57,128.67

Finding the Fourth Proportional to 145,889.28, 218,771.96 and 57,128.67

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Solution

The fourth proportional to 145,889.28, 218,771.96 and 57,128.67 is: 85,668.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,889.28 : 218,771.96 = 57,128.67 : x
  2. Step 2: Convert to fraction form
    145,889.28/218,771.96 = 57,128.67/x
  3. Step 3: Cross multiply
    145,889.28x = 218,771.96 × 57,128.67
  4. Step 4: Simplify right side
    145,889.28x = 12,498,150,822.45
  5. Step 5: Solve for x
    x = 12,498,150,822.45/145,889.28
  6. Step 6: Final answer
    x = 85,668.74

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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.