Home / 123,638.15-185,455.20-39,397.16

Finding the Fourth Proportional to 123,638.15, 185,455.20 and 39,397.16

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Solution

The fourth proportional to 123,638.15, 185,455.20 and 39,397.16 is: 59,095.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,638.15 : 185,455.20 = 39,397.16 : x
  2. Step 2: Convert to fraction form
    123,638.15/185,455.20 = 39,397.16/x
  3. Step 3: Cross multiply
    123,638.15x = 185,455.20 × 39,397.16
  4. Step 4: Simplify right side
    123,638.15x = 7,306,407,944.60
  5. Step 5: Solve for x
    x = 7,306,407,944.60/123,638.15
  6. Step 6: Final answer
    x = 59,095.09

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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.