Home / 145,325.80-200,554.68-81,662.32

Finding the Fourth Proportional to 145,325.80, 200,554.68 and 81,662.32

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Solution

The fourth proportional to 145,325.80, 200,554.68 and 81,662.32 is: 112,696.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,325.80 : 200,554.68 = 81,662.32 : x
  2. Step 2: Convert to fraction form
    145,325.80/200,554.68 = 81,662.32/x
  3. Step 3: Cross multiply
    145,325.80x = 200,554.68 × 81,662.32
  4. Step 4: Simplify right side
    145,325.80x = 16,377,760,455.66
  5. Step 5: Solve for x
    x = 16,377,760,455.66/145,325.80
  6. Step 6: Final answer
    x = 112,696.85

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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.