Home / 145,132.92-200,286.57-81,470.58

Finding the Fourth Proportional to 145,132.92, 200,286.57 and 81,470.58

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Solution

The fourth proportional to 145,132.92, 200,286.57 and 81,470.58 is: 112,431.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,132.92 : 200,286.57 = 81,470.58 : x
  2. Step 2: Convert to fraction form
    145,132.92/200,286.57 = 81,470.58/x
  3. Step 3: Cross multiply
    145,132.92x = 200,286.57 × 81,470.58
  4. Step 4: Simplify right side
    145,132.92x = 16,317,463,024.11
  5. Step 5: Solve for x
    x = 16,317,463,024.11/145,132.92
  6. Step 6: Final answer
    x = 112,431.16

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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.