Home / 105,518.07-158,289.62-66,078.45

Finding the Fourth Proportional to 105,518.07, 158,289.62 and 66,078.45

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Solution

The fourth proportional to 105,518.07, 158,289.62 and 66,078.45 is: 99,125.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,518.07 : 158,289.62 = 66,078.45 : x
  2. Step 2: Convert to fraction form
    105,518.07/158,289.62 = 66,078.45/x
  3. Step 3: Cross multiply
    105,518.07x = 158,289.62 × 66,078.45
  4. Step 4: Simplify right side
    105,518.07x = 10,459,532,410.30
  5. Step 5: Solve for x
    x = 10,459,532,410.30/105,518.07
  6. Step 6: Final answer
    x = 99,125.51

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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.