Home / 100,892.08-139,224.96-58,443.28

Finding the Fourth Proportional to 100,892.08, 139,224.96 and 58,443.28

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Solution

The fourth proportional to 100,892.08, 139,224.96 and 58,443.28 is: 80,648.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,892.08 : 139,224.96 = 58,443.28 : x
  2. Step 2: Convert to fraction form
    100,892.08/139,224.96 = 58,443.28/x
  3. Step 3: Cross multiply
    100,892.08x = 139,224.96 × 58,443.28
  4. Step 4: Simplify right side
    100,892.08x = 8,136,763,320.27
  5. Step 5: Solve for x
    x = 8,136,763,320.27/100,892.08
  6. Step 6: Final answer
    x = 80,648.19

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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.