Home / 145,080.26-200,210.87-81,418.05

Finding the Fourth Proportional to 145,080.26, 200,210.87 and 81,418.05

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Solution

The fourth proportional to 145,080.26, 200,210.87 and 81,418.05 is: 112,356.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,080.26 : 200,210.87 = 81,418.05 : x
  2. Step 2: Convert to fraction form
    145,080.26/200,210.87 = 81,418.05/x
  3. Step 3: Cross multiply
    145,080.26x = 200,210.87 × 81,418.05
  4. Step 4: Simplify right side
    145,080.26x = 16,300,778,624.20
  5. Step 5: Solve for x
    x = 16,300,778,624.20/145,080.26
  6. Step 6: Final answer
    x = 112,356.97

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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.