Home / 145,033.38-200,145.87-81,377.10

Finding the Fourth Proportional to 145,033.38, 200,145.87 and 81,377.10

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Solution

The fourth proportional to 145,033.38, 200,145.87 and 81,377.10 is: 112,300.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,033.38 : 200,145.87 = 81,377.10 : x
  2. Step 2: Convert to fraction form
    145,033.38/200,145.87 = 81,377.10/x
  3. Step 3: Cross multiply
    145,033.38x = 200,145.87 × 81,377.10
  4. Step 4: Simplify right side
    145,033.38x = 16,287,290,477.58
  5. Step 5: Solve for x
    x = 16,287,290,477.58/145,033.38
  6. Step 6: Final answer
    x = 112,300.29

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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.