Home / 105,269.43-145,270.06-57,521.68

Finding the Fourth Proportional to 105,269.43, 145,270.06 and 57,521.68

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Solution

The fourth proportional to 105,269.43, 145,270.06 and 57,521.68 is: 79,378.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,269.43 : 145,270.06 = 57,521.68 : x
  2. Step 2: Convert to fraction form
    105,269.43/145,270.06 = 57,521.68/x
  3. Step 3: Cross multiply
    105,269.43x = 145,270.06 × 57,521.68
  4. Step 4: Simplify right side
    105,269.43x = 8,356,177,904.90
  5. Step 5: Solve for x
    x = 8,356,177,904.90/105,269.43
  6. Step 6: Final answer
    x = 79,378.96

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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.