Home / 145,684.36-218,390.46-70,749.64

Finding the Fourth Proportional to 145,684.36, 218,390.46 and 70,749.64

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Solution

The fourth proportional to 145,684.36, 218,390.46 and 70,749.64 is: 106,058.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,684.36 : 218,390.46 = 70,749.64 : x
  2. Step 2: Convert to fraction form
    145,684.36/218,390.46 = 70,749.64/x
  3. Step 3: Cross multiply
    145,684.36x = 218,390.46 × 70,749.64
  4. Step 4: Simplify right side
    145,684.36x = 15,451,046,424.43
  5. Step 5: Solve for x
    x = 15,451,046,424.43/145,684.36
  6. Step 6: Final answer
    x = 106,058.37

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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.