Home / 121,004.28-181,491.84-42,111.90

Finding the Fourth Proportional to 121,004.28, 181,491.84 and 42,111.90

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Solution

The fourth proportional to 121,004.28, 181,491.84 and 42,111.90 is: 63,162.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,004.28 : 181,491.84 = 42,111.90 : x
  2. Step 2: Convert to fraction form
    121,004.28/181,491.84 = 42,111.90/x
  3. Step 3: Cross multiply
    121,004.28x = 181,491.84 × 42,111.90
  4. Step 4: Simplify right side
    121,004.28x = 7,642,966,216.90
  5. Step 5: Solve for x
    x = 7,642,966,216.90/121,004.28
  6. Step 6: Final answer
    x = 63,162.78

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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.