Home / 188,018.40-282,113.73-81,434.96

Finding the Fourth Proportional to 188,018.40, 282,113.73 and 81,434.96

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Solution

The fourth proportional to 188,018.40, 282,113.73 and 81,434.96 is: 122,189.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,018.40 : 282,113.73 = 81,434.96 : x
  2. Step 2: Convert to fraction form
    188,018.40/282,113.73 = 81,434.96/x
  3. Step 3: Cross multiply
    188,018.40x = 282,113.73 × 81,434.96
  4. Step 4: Simplify right side
    188,018.40x = 22,973,918,500.26
  5. Step 5: Solve for x
    x = 22,973,918,500.26/188,018.40
  6. Step 6: Final answer
    x = 122,189.74

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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.