Home / 100,913.12-139,260.12-58,496.26

Finding the Fourth Proportional to 100,913.12, 139,260.12 and 58,496.26

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Solution

The fourth proportional to 100,913.12, 139,260.12 and 58,496.26 is: 80,724.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,913.12 : 139,260.12 = 58,496.26 : x
  2. Step 2: Convert to fraction form
    100,913.12/139,260.12 = 58,496.26/x
  3. Step 3: Cross multiply
    100,913.12x = 139,260.12 × 58,496.26
  4. Step 4: Simplify right side
    100,913.12x = 8,146,196,187.15
  5. Step 5: Solve for x
    x = 8,146,196,187.15/100,913.12
  6. Step 6: Final answer
    x = 80,724.85

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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.