Home / 106,539.02-159,656.22-78,237.08

Finding the Fourth Proportional to 106,539.02, 159,656.22 and 78,237.08

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Solution

The fourth proportional to 106,539.02, 159,656.22 and 78,237.08 is: 117,243.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,539.02 : 159,656.22 = 78,237.08 : x
  2. Step 2: Convert to fraction form
    106,539.02/159,656.22 = 78,237.08/x
  3. Step 3: Cross multiply
    106,539.02x = 159,656.22 × 78,237.08
  4. Step 4: Simplify right side
    106,539.02x = 12,491,036,456.64
  5. Step 5: Solve for x
    x = 12,491,036,456.64/106,539.02
  6. Step 6: Final answer
    x = 117,243.77

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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.