Home / 129,561.64-193,903.50-79,673.36

Finding the Fourth Proportional to 129,561.64, 193,903.50 and 79,673.36

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Solution

The fourth proportional to 129,561.64, 193,903.50 and 79,673.36 is: 119,240.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,561.64 : 193,903.50 = 79,673.36 : x
  2. Step 2: Convert to fraction form
    129,561.64/193,903.50 = 79,673.36/x
  3. Step 3: Cross multiply
    129,561.64x = 193,903.50 × 79,673.36
  4. Step 4: Simplify right side
    129,561.64x = 15,448,943,360.76
  5. Step 5: Solve for x
    x = 15,448,943,360.76/129,561.64
  6. Step 6: Final answer
    x = 119,240.10

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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.