Home / 120,828.30-181,242.45-92,802.30

Finding the Fourth Proportional to 120,828.30, 181,242.45 and 92,802.30

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Solution

The fourth proportional to 120,828.30, 181,242.45 and 92,802.30 is: 139,203.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,828.30 : 181,242.45 = 92,802.30 : x
  2. Step 2: Convert to fraction form
    120,828.30/181,242.45 = 92,802.30/x
  3. Step 3: Cross multiply
    120,828.30x = 181,242.45 × 92,802.30
  4. Step 4: Simplify right side
    120,828.30x = 16,819,716,217.64
  5. Step 5: Solve for x
    x = 16,819,716,217.64/120,828.30
  6. Step 6: Final answer
    x = 139,203.45

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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.