Home / 120,345.81-166,055.09-69,351.39

Finding the Fourth Proportional to 120,345.81, 166,055.09 and 69,351.39

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Solution

The fourth proportional to 120,345.81, 166,055.09 and 69,351.39 is: 95,692.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,345.81 : 166,055.09 = 69,351.39 : x
  2. Step 2: Convert to fraction form
    120,345.81/166,055.09 = 69,351.39/x
  3. Step 3: Cross multiply
    120,345.81x = 166,055.09 × 69,351.39
  4. Step 4: Simplify right side
    120,345.81x = 11,516,150,961.32
  5. Step 5: Solve for x
    x = 11,516,150,961.32/120,345.81
  6. Step 6: Final answer
    x = 95,692.16

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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.