Home / 205,748.10-308,622.15-100,772.10

Finding the Fourth Proportional to 205,748.10, 308,622.15 and 100,772.10

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Solution

The fourth proportional to 205,748.10, 308,622.15 and 100,772.10 is: 151,158.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,748.10 : 308,622.15 = 100,772.10 : x
  2. Step 2: Convert to fraction form
    205,748.10/308,622.15 = 100,772.10/x
  3. Step 3: Cross multiply
    205,748.10x = 308,622.15 × 100,772.10
  4. Step 4: Simplify right side
    205,748.10x = 31,100,502,162.02
  5. Step 5: Solve for x
    x = 31,100,502,162.02/205,748.10
  6. Step 6: Final answer
    x = 151,158.15

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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.