Home / 121,228.90-181,905.63-53,807.16

Finding the Fourth Proportional to 121,228.90, 181,905.63 and 53,807.16

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Solution

The fourth proportional to 121,228.90, 181,905.63 and 53,807.16 is: 80,738.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,228.90 : 181,905.63 = 53,807.16 : x
  2. Step 2: Convert to fraction form
    121,228.90/181,905.63 = 53,807.16/x
  3. Step 3: Cross multiply
    121,228.90x = 181,905.63 × 53,807.16
  4. Step 4: Simplify right side
    121,228.90x = 9,787,825,338.31
  5. Step 5: Solve for x
    x = 9,787,825,338.31/121,228.90
  6. Step 6: Final answer
    x = 80,738.38

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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.