Home / 189,970.03-285,053.26-83,428.87

Finding the Fourth Proportional to 189,970.03, 285,053.26 and 83,428.87

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Solution

The fourth proportional to 189,970.03, 285,053.26 and 83,428.87 is: 125,186.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,970.03 : 285,053.26 = 83,428.87 : x
  2. Step 2: Convert to fraction form
    189,970.03/285,053.26 = 83,428.87/x
  3. Step 3: Cross multiply
    189,970.03x = 285,053.26 × 83,428.87
  4. Step 4: Simplify right side
    189,970.03x = 23,781,671,141.31
  5. Step 5: Solve for x
    x = 23,781,671,141.31/189,970.03
  6. Step 6: Final answer
    x = 125,186.44

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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.