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Finding the Fourth Proportional to 121,722.40, 182,583.60 and 65,735.20

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Solution

The fourth proportional to 121,722.40, 182,583.60 and 65,735.20 is: 98,602.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,722.40 : 182,583.60 = 65,735.20 : x
  2. Step 2: Convert to fraction form
    121,722.40/182,583.60 = 65,735.20/x
  3. Step 3: Cross multiply
    121,722.40x = 182,583.60 × 65,735.20
  4. Step 4: Simplify right side
    121,722.40x = 12,002,169,462.72
  5. Step 5: Solve for x
    x = 12,002,169,462.72/121,722.40
  6. Step 6: Final answer
    x = 98,602.80

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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.