Home / 145,778.40-201,178.08-82,112.40

Finding the Fourth Proportional to 145,778.40, 201,178.08 and 82,112.40

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Solution

The fourth proportional to 145,778.40, 201,178.08 and 82,112.40 is: 113,317.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,778.40 : 201,178.08 = 82,112.40 : x
  2. Step 2: Convert to fraction form
    145,778.40/201,178.08 = 82,112.40/x
  3. Step 3: Cross multiply
    145,778.40x = 201,178.08 × 82,112.40
  4. Step 4: Simplify right side
    145,778.40x = 16,519,214,976.19
  5. Step 5: Solve for x
    x = 16,519,214,976.19/145,778.40
  6. Step 6: Final answer
    x = 113,317.30

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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.