Home / 101,142.37-139,582.85-58,135.62

Finding the Fourth Proportional to 101,142.37, 139,582.85 and 58,135.62

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Solution

The fourth proportional to 101,142.37, 139,582.85 and 58,135.62 is: 80,230.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,142.37 : 139,582.85 = 58,135.62 : x
  2. Step 2: Convert to fraction form
    101,142.37/139,582.85 = 58,135.62/x
  3. Step 3: Cross multiply
    101,142.37x = 139,582.85 × 58,135.62
  4. Step 4: Simplify right side
    101,142.37x = 8,114,735,758.87
  5. Step 5: Solve for x
    x = 8,114,735,758.87/101,142.37
  6. Step 6: Final answer
    x = 80,230.82

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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.