Home / 103,617.40-155,222.73-53,730.11

Finding the Fourth Proportional to 103,617.40, 155,222.73 and 53,730.11

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Solution

The fourth proportional to 103,617.40, 155,222.73 and 53,730.11 is: 80,489.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,617.40 : 155,222.73 = 53,730.11 : x
  2. Step 2: Convert to fraction form
    103,617.40/155,222.73 = 53,730.11/x
  3. Step 3: Cross multiply
    103,617.40x = 155,222.73 × 53,730.11
  4. Step 4: Simplify right side
    103,617.40x = 8,340,134,088.75
  5. Step 5: Solve for x
    x = 8,340,134,088.75/103,617.40
  6. Step 6: Final answer
    x = 80,489.71

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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.