Home / 120,828.60-181,242.90-111,497.40

Finding the Fourth Proportional to 120,828.60, 181,242.90 and 111,497.40

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Solution

The fourth proportional to 120,828.60, 181,242.90 and 111,497.40 is: 167,246.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,828.60 : 181,242.90 = 111,497.40 : x
  2. Step 2: Convert to fraction form
    120,828.60/181,242.90 = 111,497.40/x
  3. Step 3: Cross multiply
    120,828.60x = 181,242.90 × 111,497.40
  4. Step 4: Simplify right side
    120,828.60x = 20,208,112,118.46
  5. Step 5: Solve for x
    x = 20,208,112,118.46/120,828.60
  6. Step 6: Final answer
    x = 167,246.10

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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.