Home / 121,039.21-181,583.43-42,159.58

Finding the Fourth Proportional to 121,039.21, 181,583.43 and 42,159.58

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Solution

The fourth proportional to 121,039.21, 181,583.43 and 42,159.58 is: 63,247.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,039.21 : 181,583.43 = 42,159.58 : x
  2. Step 2: Convert to fraction form
    121,039.21/181,583.43 = 42,159.58/x
  3. Step 3: Cross multiply
    121,039.21x = 181,583.43 × 42,159.58
  4. Step 4: Simplify right side
    121,039.21x = 7,655,481,143.76
  5. Step 5: Solve for x
    x = 7,655,481,143.76/121,039.21
  6. Step 6: Final answer
    x = 63,247.94

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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.