Home / 145,621.31-218,446.87-55,739.54

Finding the Fourth Proportional to 145,621.31, 218,446.87 and 55,739.54

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Solution

The fourth proportional to 145,621.31, 218,446.87 and 55,739.54 is: 83,615.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,621.31 : 218,446.87 = 55,739.54 : x
  2. Step 2: Convert to fraction form
    145,621.31/218,446.87 = 55,739.54/x
  3. Step 3: Cross multiply
    145,621.31x = 218,446.87 × 55,739.54
  4. Step 4: Simplify right side
    145,621.31x = 12,176,128,048.24
  5. Step 5: Solve for x
    x = 12,176,128,048.24/145,621.31
  6. Step 6: Final answer
    x = 83,615.02

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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.