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Finding the Fourth Proportional to 104,203, 143,800.20 and 56,456.68

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Solution

The fourth proportional to 104,203, 143,800.20 and 56,456.68 is: 77,910.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,203 : 143,800.20 = 56,456.68 : x
  2. Step 2: Convert to fraction form
    104,203/143,800.20 = 56,456.68/x
  3. Step 3: Cross multiply
    104,203x = 143,800.20 × 56,456.68
  4. Step 4: Simplify right side
    104,203x = 8,118,481,875.34
  5. Step 5: Solve for x
    x = 8,118,481,875.34/104,203
  6. Step 6: Final answer
    x = 77,910.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.