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Finding the Fourth Proportional to 169,792.40, 254,688.60 and 81,000.20

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Solution

The fourth proportional to 169,792.40, 254,688.60 and 81,000.20 is: 121,500.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,792.40 : 254,688.60 = 81,000.20 : x
  2. Step 2: Convert to fraction form
    169,792.40/254,688.60 = 81,000.20/x
  3. Step 3: Cross multiply
    169,792.40x = 254,688.60 × 81,000.20
  4. Step 4: Simplify right side
    169,792.40x = 20,629,827,537.72
  5. Step 5: Solve for x
    x = 20,629,827,537.72/169,792.40
  6. Step 6: Final answer
    x = 121,500.30

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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.