Home / 131,641.83-181,608.04-77,166.39

Finding the Fourth Proportional to 131,641.83, 181,608.04 and 77,166.39

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Solution

The fourth proportional to 131,641.83, 181,608.04 and 77,166.39 is: 106,455.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,641.83 : 181,608.04 = 77,166.39 : x
  2. Step 2: Convert to fraction form
    131,641.83/181,608.04 = 77,166.39/x
  3. Step 3: Cross multiply
    131,641.83x = 181,608.04 × 77,166.39
  4. Step 4: Simplify right side
    131,641.83x = 14,014,037,619.26
  5. Step 5: Solve for x
    x = 14,014,037,619.26/131,641.83
  6. Step 6: Final answer
    x = 106,455.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.