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Finding the Fourth Proportional to 138,533.60, 207,800.40 and 45,048.80

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Solution

The fourth proportional to 138,533.60, 207,800.40 and 45,048.80 is: 67,573.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,533.60 : 207,800.40 = 45,048.80 : x
  2. Step 2: Convert to fraction form
    138,533.60/207,800.40 = 45,048.80/x
  3. Step 3: Cross multiply
    138,533.60x = 207,800.40 × 45,048.80
  4. Step 4: Simplify right side
    138,533.60x = 9,361,158,659.52
  5. Step 5: Solve for x
    x = 9,361,158,659.52/138,533.60
  6. Step 6: Final answer
    x = 67,573.20

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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.