Home / 189,177.19-260,916.83-121,200.47

Finding the Fourth Proportional to 189,177.19, 260,916.83 and 121,200.47

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Solution

The fourth proportional to 189,177.19, 260,916.83 and 121,200.47 is: 167,162.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,177.19 : 260,916.83 = 121,200.47 : x
  2. Step 2: Convert to fraction form
    189,177.19/260,916.83 = 121,200.47/x
  3. Step 3: Cross multiply
    189,177.19x = 260,916.83 × 121,200.47
  4. Step 4: Simplify right side
    189,177.19x = 31,623,241,949.26
  5. Step 5: Solve for x
    x = 31,623,241,949.26/189,177.19
  6. Step 6: Final answer
    x = 167,162.03

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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.