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Finding the Fourth Proportional to 145,145.60, 217,449.60 and 82,630.40

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Solution

The fourth proportional to 145,145.60, 217,449.60 and 82,630.40 is: 123,792.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,145.60 : 217,449.60 = 82,630.40 : x
  2. Step 2: Convert to fraction form
    145,145.60/217,449.60 = 82,630.40/x
  3. Step 3: Cross multiply
    145,145.60x = 217,449.60 × 82,630.40
  4. Step 4: Simplify right side
    145,145.60x = 17,967,947,427.84
  5. Step 5: Solve for x
    x = 17,967,947,427.84/145,145.60
  6. Step 6: Final answer
    x = 123,792.57

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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.