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Finding the Fourth Proportional to 169,627.60, 254,441.40 and 85,646.80

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Solution

The fourth proportional to 169,627.60, 254,441.40 and 85,646.80 is: 128,470.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,627.60 : 254,441.40 = 85,646.80 : x
  2. Step 2: Convert to fraction form
    169,627.60/254,441.40 = 85,646.80/x
  3. Step 3: Cross multiply
    169,627.60x = 254,441.40 × 85,646.80
  4. Step 4: Simplify right side
    169,627.60x = 21,792,091,697.52
  5. Step 5: Solve for x
    x = 21,792,091,697.52/169,627.60
  6. Step 6: Final answer
    x = 128,470.20

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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.