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Finding the Fourth Proportional to 145,638.54, 201,043.13 and 97,919.55

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Solution

The fourth proportional to 145,638.54, 201,043.13 and 97,919.55 is: 135,170.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,638.54 : 201,043.13 = 97,919.55 : x
  2. Step 2: Convert to fraction form
    145,638.54/201,043.13 = 97,919.55/x
  3. Step 3: Cross multiply
    145,638.54x = 201,043.13 × 97,919.55
  4. Step 4: Simplify right side
    145,638.54x = 19,686,052,330.59
  5. Step 5: Solve for x
    x = 19,686,052,330.59/145,638.54
  6. Step 6: Final answer
    x = 135,170.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.