Home / 121,006.72-181,529.48-42,143.36

Finding the Fourth Proportional to 121,006.72, 181,529.48 and 42,143.36

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Solution

The fourth proportional to 121,006.72, 181,529.48 and 42,143.36 is: 63,221.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,006.72 : 181,529.48 = 42,143.36 : x
  2. Step 2: Convert to fraction form
    121,006.72/181,529.48 = 42,143.36/x
  3. Step 3: Cross multiply
    121,006.72x = 181,529.48 × 42,143.36
  4. Step 4: Simplify right side
    121,006.72x = 7,650,262,226.25
  5. Step 5: Solve for x
    x = 7,650,262,226.25/121,006.72
  6. Step 6: Final answer
    x = 63,221.80

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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.