Home / 145,038.05-200,149.36-80,503.49

Finding the Fourth Proportional to 145,038.05, 200,149.36 and 80,503.49

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Solution

The fourth proportional to 145,038.05, 200,149.36 and 80,503.49 is: 111,093.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,038.05 : 200,149.36 = 80,503.49 : x
  2. Step 2: Convert to fraction form
    145,038.05/200,149.36 = 80,503.49/x
  3. Step 3: Cross multiply
    145,038.05x = 200,149.36 × 80,503.49
  4. Step 4: Simplify right side
    145,038.05x = 16,112,720,799.26
  5. Step 5: Solve for x
    x = 16,112,720,799.26/145,038.05
  6. Step 6: Final answer
    x = 111,093.06

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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.