Home / 145,121.14-200,265.51-81,457.30

Finding the Fourth Proportional to 145,121.14, 200,265.51 and 81,457.30

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Solution

The fourth proportional to 145,121.14, 200,265.51 and 81,457.30 is: 112,410.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,121.14 : 200,265.51 = 81,457.30 : x
  2. Step 2: Convert to fraction form
    145,121.14/200,265.51 = 81,457.30/x
  3. Step 3: Cross multiply
    145,121.14x = 200,265.51 × 81,457.30
  4. Step 4: Simplify right side
    145,121.14x = 16,313,087,727.72
  5. Step 5: Solve for x
    x = 16,313,087,727.72/145,121.14
  6. Step 6: Final answer
    x = 112,410.14

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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.