Home / 145,031.28-200,155.23-80,506.59

Finding the Fourth Proportional to 145,031.28, 200,155.23 and 80,506.59

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Solution

The fourth proportional to 145,031.28, 200,155.23 and 80,506.59 is: 111,105.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,031.28 : 200,155.23 = 80,506.59 : x
  2. Step 2: Convert to fraction form
    145,031.28/200,155.23 = 80,506.59/x
  3. Step 3: Cross multiply
    145,031.28x = 200,155.23 × 80,506.59
  4. Step 4: Simplify right side
    145,031.28x = 16,113,815,037.97
  5. Step 5: Solve for x
    x = 16,113,815,037.97/145,031.28
  6. Step 6: Final answer
    x = 111,105.79

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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.