Home / 145,148.76-200,325.96-81,490.86

Finding the Fourth Proportional to 145,148.76, 200,325.96 and 81,490.86

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Solution

The fourth proportional to 145,148.76, 200,325.96 and 81,490.86 is: 112,468.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,148.76 : 200,325.96 = 81,490.86 : x
  2. Step 2: Convert to fraction form
    145,148.76/200,325.96 = 81,490.86/x
  3. Step 3: Cross multiply
    145,148.76x = 200,325.96 × 81,490.86
  4. Step 4: Simplify right side
    145,148.76x = 16,324,734,760.73
  5. Step 5: Solve for x
    x = 16,324,734,760.73/145,148.76
  6. Step 6: Final answer
    x = 112,468.99

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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.