Home / 105,267.78-145,266.30-57,521.07

Finding the Fourth Proportional to 105,267.78, 145,266.30 and 57,521.07

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Solution

The fourth proportional to 105,267.78, 145,266.30 and 57,521.07 is: 79,377.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,267.78 : 145,266.30 = 57,521.07 : x
  2. Step 2: Convert to fraction form
    105,267.78/145,266.30 = 57,521.07/x
  3. Step 3: Cross multiply
    105,267.78x = 145,266.30 × 57,521.07
  4. Step 4: Simplify right side
    105,267.78x = 8,355,873,010.94
  5. Step 5: Solve for x
    x = 8,355,873,010.94/105,267.78
  6. Step 6: Final answer
    x = 79,377.31

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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.