Home / 121,185.19-181,860.78-42,299.41

Finding the Fourth Proportional to 121,185.19, 181,860.78 and 42,299.41

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Solution

The fourth proportional to 121,185.19, 181,860.78 and 42,299.41 is: 63,478.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,185.19 : 181,860.78 = 42,299.41 : x
  2. Step 2: Convert to fraction form
    121,185.19/181,860.78 = 42,299.41/x
  3. Step 3: Cross multiply
    121,185.19x = 181,860.78 × 42,299.41
  4. Step 4: Simplify right side
    121,185.19x = 7,692,603,696.14
  5. Step 5: Solve for x
    x = 7,692,603,696.14/121,185.19
  6. Step 6: Final answer
    x = 63,478.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.