Home / 121,131.81-181,709.82-46,314.90

Finding the Fourth Proportional to 121,131.81, 181,709.82 and 46,314.90

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Solution

The fourth proportional to 121,131.81, 181,709.82 and 46,314.90 is: 69,476.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,131.81 : 181,709.82 = 46,314.90 : x
  2. Step 2: Convert to fraction form
    121,131.81/181,709.82 = 46,314.90/x
  3. Step 3: Cross multiply
    121,131.81x = 181,709.82 × 46,314.90
  4. Step 4: Simplify right side
    121,131.81x = 8,415,872,142.32
  5. Step 5: Solve for x
    x = 8,415,872,142.32/121,131.81
  6. Step 6: Final answer
    x = 69,476.98

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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.