Home / 156,540.84-234,603.60-85,280.68

Finding the Fourth Proportional to 156,540.84, 234,603.60 and 85,280.68

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Solution

The fourth proportional to 156,540.84, 234,603.60 and 85,280.68 is: 127,807.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,540.84 : 234,603.60 = 85,280.68 : x
  2. Step 2: Convert to fraction form
    156,540.84/234,603.60 = 85,280.68/x
  3. Step 3: Cross multiply
    156,540.84x = 234,603.60 × 85,280.68
  4. Step 4: Simplify right side
    156,540.84x = 20,007,154,538.45
  5. Step 5: Solve for x
    x = 20,007,154,538.45/156,540.84
  6. Step 6: Final answer
    x = 127,807.89

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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.