Home / 105,454.06-145,521.93-57,709.42

Finding the Fourth Proportional to 105,454.06, 145,521.93 and 57,709.42

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Solution

The fourth proportional to 105,454.06, 145,521.93 and 57,709.42 is: 79,636.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,454.06 : 145,521.93 = 57,709.42 : x
  2. Step 2: Convert to fraction form
    105,454.06/145,521.93 = 57,709.42/x
  3. Step 3: Cross multiply
    105,454.06x = 145,521.93 × 57,709.42
  4. Step 4: Simplify right side
    105,454.06x = 8,397,986,030.19
  5. Step 5: Solve for x
    x = 8,397,986,030.19/105,454.06
  6. Step 6: Final answer
    x = 79,636.44

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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.