Home / 103,020.81-142,171.88-57,698.70

Finding the Fourth Proportional to 103,020.81, 142,171.88 and 57,698.70

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Solution

The fourth proportional to 103,020.81, 142,171.88 and 57,698.70 is: 79,625.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,020.81 : 142,171.88 = 57,698.70 : x
  2. Step 2: Convert to fraction form
    103,020.81/142,171.88 = 57,698.70/x
  3. Step 3: Cross multiply
    103,020.81x = 142,171.88 × 57,698.70
  4. Step 4: Simplify right side
    103,020.81x = 8,203,132,364.06
  5. Step 5: Solve for x
    x = 8,203,132,364.06/103,020.81
  6. Step 6: Final answer
    x = 79,625.97

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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.