Home / 138,518.60-207,777.90-45,033.80

Finding the Fourth Proportional to 138,518.60, 207,777.90 and 45,033.80

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Solution

The fourth proportional to 138,518.60, 207,777.90 and 45,033.80 is: 67,550.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,518.60 : 207,777.90 = 45,033.80 : x
  2. Step 2: Convert to fraction form
    138,518.60/207,777.90 = 45,033.80/x
  3. Step 3: Cross multiply
    138,518.60x = 207,777.90 × 45,033.80
  4. Step 4: Simplify right side
    138,518.60x = 9,357,028,393.02
  5. Step 5: Solve for x
    x = 9,357,028,393.02/138,518.60
  6. Step 6: Final answer
    x = 67,550.70

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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.