Home / 128,742.33-193,166.84-69,508.38

Finding the Fourth Proportional to 128,742.33, 193,166.84 and 69,508.38

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Solution

The fourth proportional to 128,742.33, 193,166.84 and 69,508.38 is: 104,291.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,742.33 : 193,166.84 = 69,508.38 : x
  2. Step 2: Convert to fraction form
    128,742.33/193,166.84 = 69,508.38/x
  3. Step 3: Cross multiply
    128,742.33x = 193,166.84 × 69,508.38
  4. Step 4: Simplify right side
    128,742.33x = 13,426,712,804.74
  5. Step 5: Solve for x
    x = 13,426,712,804.74/128,742.33
  6. Step 6: Final answer
    x = 104,291.36

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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.