Home / 100,693.10-138,951.73-55,373.00

Finding the Fourth Proportional to 100,693.10, 138,951.73 and 55,373.00

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Solution

The fourth proportional to 100,693.10, 138,951.73 and 55,373.00 is: 76,412.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,693.10 : 138,951.73 = 55,373.00 : x
  2. Step 2: Convert to fraction form
    100,693.10/138,951.73 = 55,373.00/x
  3. Step 3: Cross multiply
    100,693.10x = 138,951.73 × 55,373.00
  4. Step 4: Simplify right side
    100,693.10x = 7,694,173,519.75
  5. Step 5: Solve for x
    x = 7,694,173,519.75/100,693.10
  6. Step 6: Final answer
    x = 76,412.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.