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Finding the Fourth Proportional to 123,903.20, 185,903.40 and 45,025.40

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Solution

The fourth proportional to 123,903.20, 185,903.40 and 45,025.40 is: 67,555.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,903.20 : 185,903.40 = 45,025.40 : x
  2. Step 2: Convert to fraction form
    123,903.20/185,903.40 = 45,025.40/x
  3. Step 3: Cross multiply
    123,903.20x = 185,903.40 × 45,025.40
  4. Step 4: Simplify right side
    123,903.20x = 8,370,374,946.36
  5. Step 5: Solve for x
    x = 8,370,374,946.36/123,903.20
  6. Step 6: Final answer
    x = 67,555.76

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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.