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Finding the Fourth Proportional to 123,433.60, 185,150.40 and 115,657.60

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Solution

The fourth proportional to 123,433.60, 185,150.40 and 115,657.60 is: 173,486.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,433.60 : 185,150.40 = 115,657.60 : x
  2. Step 2: Convert to fraction form
    123,433.60/185,150.40 = 115,657.60/x
  3. Step 3: Cross multiply
    123,433.60x = 185,150.40 × 115,657.60
  4. Step 4: Simplify right side
    123,433.60x = 21,414,050,903.04
  5. Step 5: Solve for x
    x = 21,414,050,903.04/123,433.60
  6. Step 6: Final answer
    x = 173,486.40

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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.