Home / 145,030.68-200,139.21-80,496.09

Finding the Fourth Proportional to 145,030.68, 200,139.21 and 80,496.09

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Solution

The fourth proportional to 145,030.68, 200,139.21 and 80,496.09 is: 111,082.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,030.68 : 200,139.21 = 80,496.09 : x
  2. Step 2: Convert to fraction form
    145,030.68/200,139.21 = 80,496.09/x
  3. Step 3: Cross multiply
    145,030.68x = 200,139.21 × 80,496.09
  4. Step 4: Simplify right side
    145,030.68x = 16,110,423,860.69
  5. Step 5: Solve for x
    x = 16,110,423,860.69/145,030.68
  6. Step 6: Final answer
    x = 111,082.87

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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.