Home / 100,906.08-139,244.28-58,457.28

Finding the Fourth Proportional to 100,906.08, 139,244.28 and 58,457.28

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Solution

The fourth proportional to 100,906.08, 139,244.28 and 58,457.28 is: 80,667.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,906.08 : 139,244.28 = 58,457.28 : x
  2. Step 2: Convert to fraction form
    100,906.08/139,244.28 = 58,457.28/x
  3. Step 3: Cross multiply
    100,906.08x = 139,244.28 × 58,457.28
  4. Step 4: Simplify right side
    100,906.08x = 8,139,841,864.36
  5. Step 5: Solve for x
    x = 8,139,841,864.36/100,906.08
  6. Step 6: Final answer
    x = 80,667.51

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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.