Home / 128,764.08-193,201.61-69,641.37

Finding the Fourth Proportional to 128,764.08, 193,201.61 and 69,641.37

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Solution

The fourth proportional to 128,764.08, 193,201.61 and 69,641.37 is: 104,492.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,764.08 : 193,201.61 = 69,641.37 : x
  2. Step 2: Convert to fraction form
    128,764.08/193,201.61 = 69,641.37/x
  3. Step 3: Cross multiply
    128,764.08x = 193,201.61 × 69,641.37
  4. Step 4: Simplify right side
    128,764.08x = 13,454,824,458.40
  5. Step 5: Solve for x
    x = 13,454,824,458.40/128,764.08
  6. Step 6: Final answer
    x = 104,492.06

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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.