Home / 145,593.87-200,919.13-81,931.67

Finding the Fourth Proportional to 145,593.87, 200,919.13 and 81,931.67

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Solution

The fourth proportional to 145,593.87, 200,919.13 and 81,931.67 is: 113,065.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,593.87 : 200,919.13 = 81,931.67 : x
  2. Step 2: Convert to fraction form
    145,593.87/200,919.13 = 81,931.67/x
  3. Step 3: Cross multiply
    145,593.87x = 200,919.13 × 81,931.67
  4. Step 4: Simplify right side
    145,593.87x = 16,461,639,860.73
  5. Step 5: Solve for x
    x = 16,461,639,860.73/145,593.87
  6. Step 6: Final answer
    x = 113,065.47

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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.