Home / 128,769.21-193,206.96-69,535.13

Finding the Fourth Proportional to 128,769.21, 193,206.96 and 69,535.13

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Solution

The fourth proportional to 128,769.21, 193,206.96 and 69,535.13 is: 104,331.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,769.21 : 193,206.96 = 69,535.13 : x
  2. Step 2: Convert to fraction form
    128,769.21/193,206.96 = 69,535.13/x
  3. Step 3: Cross multiply
    128,769.21x = 193,206.96 × 69,535.13
  4. Step 4: Simplify right side
    128,769.21x = 13,434,670,114.47
  5. Step 5: Solve for x
    x = 13,434,670,114.47/128,769.21
  6. Step 6: Final answer
    x = 104,331.39

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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.