Home / 145,107.77-200,237.74-81,433.27

Finding the Fourth Proportional to 145,107.77, 200,237.74 and 81,433.27

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Solution

The fourth proportional to 145,107.77, 200,237.74 and 81,433.27 is: 112,371.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,107.77 : 200,237.74 = 81,433.27 : x
  2. Step 2: Convert to fraction form
    145,107.77/200,237.74 = 81,433.27/x
  3. Step 3: Cross multiply
    145,107.77x = 200,237.74 × 81,433.27
  4. Step 4: Simplify right side
    145,107.77x = 16,306,012,865.99
  5. Step 5: Solve for x
    x = 16,306,012,865.99/145,107.77
  6. Step 6: Final answer
    x = 112,371.74

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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.