Home / 156,126.48-234,189.36-120,639.39

Finding the Fourth Proportional to 156,126.48, 234,189.36 and 120,639.39

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Solution

The fourth proportional to 156,126.48, 234,189.36 and 120,639.39 is: 180,958.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,126.48 : 234,189.36 = 120,639.39 : x
  2. Step 2: Convert to fraction form
    156,126.48/234,189.36 = 120,639.39/x
  3. Step 3: Cross multiply
    156,126.48x = 234,189.36 × 120,639.39
  4. Step 4: Simplify right side
    156,126.48x = 28,252,461,534.89
  5. Step 5: Solve for x
    x = 28,252,461,534.89/156,126.48
  6. Step 6: Final answer
    x = 180,958.81

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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.