Home / 105,328.78-145,355.44-62,891.02

Finding the Fourth Proportional to 105,328.78, 145,355.44 and 62,891.02

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Solution

The fourth proportional to 105,328.78, 145,355.44 and 62,891.02 is: 86,790.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,328.78 : 145,355.44 = 62,891.02 : x
  2. Step 2: Convert to fraction form
    105,328.78/145,355.44 = 62,891.02/x
  3. Step 3: Cross multiply
    105,328.78x = 145,355.44 × 62,891.02
  4. Step 4: Simplify right side
    105,328.78x = 9,141,551,157.37
  5. Step 5: Solve for x
    x = 9,141,551,157.37/105,328.78
  6. Step 6: Final answer
    x = 86,790.63

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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.