Home / 105,771.24-145,971.10-69,898.36

Finding the Fourth Proportional to 105,771.24, 145,971.10 and 69,898.36

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Solution

The fourth proportional to 105,771.24, 145,971.10 and 69,898.36 is: 96,464.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,771.24 : 145,971.10 = 69,898.36 : x
  2. Step 2: Convert to fraction form
    105,771.24/145,971.10 = 69,898.36/x
  3. Step 3: Cross multiply
    105,771.24x = 145,971.10 × 69,898.36
  4. Step 4: Simplify right side
    105,771.24x = 10,203,140,497.40
  5. Step 5: Solve for x
    x = 10,203,140,497.40/105,771.24
  6. Step 6: Final answer
    x = 96,464.22

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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.