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Finding the Fourth Proportional to 119,943.40, 179,915.10 and 75,620.20

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Solution

The fourth proportional to 119,943.40, 179,915.10 and 75,620.20 is: 113,430.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,943.40 : 179,915.10 = 75,620.20 : x
  2. Step 2: Convert to fraction form
    119,943.40/179,915.10 = 75,620.20/x
  3. Step 3: Cross multiply
    119,943.40x = 179,915.10 × 75,620.20
  4. Step 4: Simplify right side
    119,943.40x = 13,605,215,845.02
  5. Step 5: Solve for x
    x = 13,605,215,845.02/119,943.40
  6. Step 6: Final answer
    x = 113,430.30

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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.