Home / 103,785.10-155,349.60-74,260.60

Finding the Fourth Proportional to 103,785.10, 155,349.60 and 74,260.60

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Solution

The fourth proportional to 103,785.10, 155,349.60 and 74,260.60 is: 111,156.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,785.10 : 155,349.60 = 74,260.60 : x
  2. Step 2: Convert to fraction form
    103,785.10/155,349.60 = 74,260.60/x
  3. Step 3: Cross multiply
    103,785.10x = 155,349.60 × 74,260.60
  4. Step 4: Simplify right side
    103,785.10x = 11,536,354,505.76
  5. Step 5: Solve for x
    x = 11,536,354,505.76/103,785.10
  6. Step 6: Final answer
    x = 111,156.17

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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.