Home / 120,899.70-181,263.15-54,285.30

Finding the Fourth Proportional to 120,899.70, 181,263.15 and 54,285.30

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Solution

The fourth proportional to 120,899.70, 181,263.15 and 54,285.30 is: 81,389.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,899.70 : 181,263.15 = 54,285.30 : x
  2. Step 2: Convert to fraction form
    120,899.70/181,263.15 = 54,285.30/x
  3. Step 3: Cross multiply
    120,899.70x = 181,263.15 × 54,285.30
  4. Step 4: Simplify right side
    120,899.70x = 9,839,924,476.70
  5. Step 5: Solve for x
    x = 9,839,924,476.70/120,899.70
  6. Step 6: Final answer
    x = 81,389.16

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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.