Home / 145,143.66-200,298.09-81,481.59

Finding the Fourth Proportional to 145,143.66, 200,298.09 and 81,481.59

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Solution

The fourth proportional to 145,143.66, 200,298.09 and 81,481.59 is: 112,444.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,143.66 : 200,298.09 = 81,481.59 : x
  2. Step 2: Convert to fraction form
    145,143.66/200,298.09 = 81,481.59/x
  3. Step 3: Cross multiply
    145,143.66x = 200,298.09 × 81,481.59
  4. Step 4: Simplify right side
    145,143.66x = 16,320,606,847.16
  5. Step 5: Solve for x
    x = 16,320,606,847.16/145,143.66
  6. Step 6: Final answer
    x = 112,444.50

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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.