Home / 121,186.60-181,812.30-108,129.40

Finding the Fourth Proportional to 121,186.60, 181,812.30 and 108,129.40

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Solution

The fourth proportional to 121,186.60, 181,812.30 and 108,129.40 is: 162,223.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,186.60 : 181,812.30 = 108,129.40 : x
  2. Step 2: Convert to fraction form
    121,186.60/181,812.30 = 108,129.40/x
  3. Step 3: Cross multiply
    121,186.60x = 181,812.30 × 108,129.40
  4. Step 4: Simplify right side
    121,186.60x = 19,659,254,911.62
  5. Step 5: Solve for x
    x = 19,659,254,911.62/121,186.60
  6. Step 6: Final answer
    x = 162,223.01

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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.