Home / 121,358.28-181,919.80-46,420.72

Finding the Fourth Proportional to 121,358.28, 181,919.80 and 46,420.72

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Solution

The fourth proportional to 121,358.28, 181,919.80 and 46,420.72 is: 69,586.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,358.28 : 181,919.80 = 46,420.72 : x
  2. Step 2: Convert to fraction form
    121,358.28/181,919.80 = 46,420.72/x
  3. Step 3: Cross multiply
    121,358.28x = 181,919.80 × 46,420.72
  4. Step 4: Simplify right side
    121,358.28x = 8,444,848,098.26
  5. Step 5: Solve for x
    x = 8,444,848,098.26/121,358.28
  6. Step 6: Final answer
    x = 69,586.09

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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.