Home / 103,228.73-142,462.80-57,290.69

Finding the Fourth Proportional to 103,228.73, 142,462.80 and 57,290.69

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Solution

The fourth proportional to 103,228.73, 142,462.80 and 57,290.69 is: 79,065.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,228.73 : 142,462.80 = 57,290.69 : x
  2. Step 2: Convert to fraction form
    103,228.73/142,462.80 = 57,290.69/x
  3. Step 3: Cross multiply
    103,228.73x = 142,462.80 × 57,290.69
  4. Step 4: Simplify right side
    103,228.73x = 8,161,792,467.49
  5. Step 5: Solve for x
    x = 8,161,792,467.49/103,228.73
  6. Step 6: Final answer
    x = 79,065.13

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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.