Home / 145,205.89-217,775.96-55,216.42

Finding the Fourth Proportional to 145,205.89, 217,775.96 and 55,216.42

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Solution

The fourth proportional to 145,205.89, 217,775.96 and 55,216.42 is: 82,812.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,205.89 : 217,775.96 = 55,216.42 : x
  2. Step 2: Convert to fraction form
    145,205.89/217,775.96 = 55,216.42/x
  3. Step 3: Cross multiply
    145,205.89x = 217,775.96 × 55,216.42
  4. Step 4: Simplify right side
    145,205.89x = 12,024,808,466.86
  5. Step 5: Solve for x
    x = 12,024,808,466.86/145,205.89
  6. Step 6: Final answer
    x = 82,812.13

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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.