Home / 145,500.03-200,790.09-81,837.88

Finding the Fourth Proportional to 145,500.03, 200,790.09 and 81,837.88

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Solution

The fourth proportional to 145,500.03, 200,790.09 and 81,837.88 is: 112,936.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,500.03 : 200,790.09 = 81,837.88 : x
  2. Step 2: Convert to fraction form
    145,500.03/200,790.09 = 81,837.88/x
  3. Step 3: Cross multiply
    145,500.03x = 200,790.09 × 81,837.88
  4. Step 4: Simplify right side
    145,500.03x = 16,432,234,788.63
  5. Step 5: Solve for x
    x = 16,432,234,788.63/145,500.03
  6. Step 6: Final answer
    x = 112,936.30

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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.