Home / 103,651.72-155,554.44-77,059.24

Finding the Fourth Proportional to 103,651.72, 155,554.44 and 77,059.24

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Solution

The fourth proportional to 103,651.72, 155,554.44 and 77,059.24 is: 115,646.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,651.72 : 155,554.44 = 77,059.24 : x
  2. Step 2: Convert to fraction form
    103,651.72/155,554.44 = 77,059.24/x
  3. Step 3: Cross multiply
    103,651.72x = 155,554.44 × 77,059.24
  4. Step 4: Simplify right side
    103,651.72x = 11,986,906,925.03
  5. Step 5: Solve for x
    x = 11,986,906,925.03/103,651.72
  6. Step 6: Final answer
    x = 115,646.00

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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.