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Finding the Fourth Proportional to 120,260.40, 180,390.60 and 57,937.20

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Solution

The fourth proportional to 120,260.40, 180,390.60 and 57,937.20 is: 86,905.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,260.40 : 180,390.60 = 57,937.20 : x
  2. Step 2: Convert to fraction form
    120,260.40/180,390.60 = 57,937.20/x
  3. Step 3: Cross multiply
    120,260.40x = 180,390.60 × 57,937.20
  4. Step 4: Simplify right side
    120,260.40x = 10,451,326,270.32
  5. Step 5: Solve for x
    x = 10,451,326,270.32/120,260.40
  6. Step 6: Final answer
    x = 86,905.80

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1.5x scale

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.