Home / 128,297.10-192,445.65-123,048.30

Finding the Fourth Proportional to 128,297.10, 192,445.65 and 123,048.30

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Solution

The fourth proportional to 128,297.10, 192,445.65 and 123,048.30 is: 184,572.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,297.10 : 192,445.65 = 123,048.30 : x
  2. Step 2: Convert to fraction form
    128,297.10/192,445.65 = 123,048.30/x
  3. Step 3: Cross multiply
    128,297.10x = 192,445.65 × 123,048.30
  4. Step 4: Simplify right side
    128,297.10x = 23,680,110,074.90
  5. Step 5: Solve for x
    x = 23,680,110,074.90/128,297.10
  6. Step 6: Final answer
    x = 184,572.45

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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.