Home / 145,408.47-200,661.57-80,877.03

Finding the Fourth Proportional to 145,408.47, 200,661.57 and 80,877.03

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Solution

The fourth proportional to 145,408.47, 200,661.57 and 80,877.03 is: 111,609.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,408.47 : 200,661.57 = 80,877.03 : x
  2. Step 2: Convert to fraction form
    145,408.47/200,661.57 = 80,877.03/x
  3. Step 3: Cross multiply
    145,408.47x = 200,661.57 × 80,877.03
  4. Step 4: Simplify right side
    145,408.47x = 16,228,911,816.74
  5. Step 5: Solve for x
    x = 16,228,911,816.74/145,408.47
  6. Step 6: Final answer
    x = 111,609.12

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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.