Home / 100,911.08-139,251.18-58,462.28

Finding the Fourth Proportional to 100,911.08, 139,251.18 and 58,462.28

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Solution

The fourth proportional to 100,911.08, 139,251.18 and 58,462.28 is: 80,674.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,911.08 : 139,251.18 = 58,462.28 : x
  2. Step 2: Convert to fraction form
    100,911.08/139,251.18 = 58,462.28/x
  3. Step 3: Cross multiply
    100,911.08x = 139,251.18 × 58,462.28
  4. Step 4: Simplify right side
    100,911.08x = 8,140,941,475.49
  5. Step 5: Solve for x
    x = 8,140,941,475.49/100,911.08
  6. Step 6: Final answer
    x = 80,674.41

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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.