Home / 145,137.74-200,289.29-81,475.52

Finding the Fourth Proportional to 145,137.74, 200,289.29 and 81,475.52

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Solution

The fourth proportional to 145,137.74, 200,289.29 and 81,475.52 is: 112,435.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,137.74 : 200,289.29 = 81,475.52 : x
  2. Step 2: Convert to fraction form
    145,137.74/200,289.29 = 81,475.52/x
  3. Step 3: Cross multiply
    145,137.74x = 200,289.29 × 81,475.52
  4. Step 4: Simplify right side
    145,137.74x = 16,318,674,757.59
  5. Step 5: Solve for x
    x = 16,318,674,757.59/145,137.74
  6. Step 6: Final answer
    x = 112,435.78

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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.