Home / 128,848.58-193,328.51-69,725.98

Finding the Fourth Proportional to 128,848.58, 193,328.51 and 69,725.98

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Solution

The fourth proportional to 128,848.58, 193,328.51 and 69,725.98 is: 104,619.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,848.58 : 193,328.51 = 69,725.98 : x
  2. Step 2: Convert to fraction form
    128,848.58/193,328.51 = 69,725.98/x
  3. Step 3: Cross multiply
    128,848.58x = 193,328.51 × 69,725.98
  4. Step 4: Simplify right side
    128,848.58x = 13,480,019,821.69
  5. Step 5: Solve for x
    x = 13,480,019,821.69/128,848.58
  6. Step 6: Final answer
    x = 104,619.08

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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.