Home / 145,804.86-201,213.18-82,143.72

Finding the Fourth Proportional to 145,804.86, 201,213.18 and 82,143.72

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Solution

The fourth proportional to 145,804.86, 201,213.18 and 82,143.72 is: 113,359.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,804.86 : 201,213.18 = 82,143.72 : x
  2. Step 2: Convert to fraction form
    145,804.86/201,213.18 = 82,143.72/x
  3. Step 3: Cross multiply
    145,804.86x = 201,213.18 × 82,143.72
  4. Step 4: Simplify right side
    145,804.86x = 16,528,399,118.23
  5. Step 5: Solve for x
    x = 16,528,399,118.23/145,804.86
  6. Step 6: Final answer
    x = 113,359.73

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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.