Home / 120,655.51-180,975.87-54,077.76

Finding the Fourth Proportional to 120,655.51, 180,975.87 and 54,077.76

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Solution

The fourth proportional to 120,655.51, 180,975.87 and 54,077.76 is: 81,113.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,655.51 : 180,975.87 = 54,077.76 : x
  2. Step 2: Convert to fraction form
    120,655.51/180,975.87 = 54,077.76/x
  3. Step 3: Cross multiply
    120,655.51x = 180,975.87 × 54,077.76
  4. Step 4: Simplify right side
    120,655.51x = 9,786,769,663.65
  5. Step 5: Solve for x
    x = 9,786,769,663.65/120,655.51
  6. Step 6: Final answer
    x = 81,113.33

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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.