Home / 85,840,130.20-128,760,195.30-82,492,051.90

Finding the Fourth Proportional to 85,840,130.20, 128,760,195.30 and 82,492,051.90

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Solution

The fourth proportional to 85,840,130.20, 128,760,195.30 and 82,492,051.90 is: 123,738,077.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,840,130.20 : 128,760,195.30 = 82,492,051.90 : x
  2. Step 2: Convert to fraction form
    85,840,130.20/128,760,195.30 = 82,492,051.90/x
  3. Step 3: Cross multiply
    85,840,130.20x = 128,760,195.30 × 82,492,051.90
  4. Step 4: Simplify right side
    85,840,130.20x = 10,621,692,713,341,736
  5. Step 5: Solve for x
    x = 10,621,692,713,341,736/85,840,130.20
  6. Step 6: Final answer
    x = 123,738,077.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.