Home / 145,583.36-217,986.60-85,562.24

Finding the Fourth Proportional to 145,583.36, 217,986.60 and 85,562.24

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Solution

The fourth proportional to 145,583.36, 217,986.60 and 85,562.24 is: 128,115.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,583.36 : 217,986.60 = 85,562.24 : x
  2. Step 2: Convert to fraction form
    145,583.36/217,986.60 = 85,562.24/x
  3. Step 3: Cross multiply
    145,583.36x = 217,986.60 × 85,562.24
  4. Step 4: Simplify right side
    145,583.36x = 18,651,421,785.98
  5. Step 5: Solve for x
    x = 18,651,421,785.98/145,583.36
  6. Step 6: Final answer
    x = 128,115.07

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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.