Home / 145,400.08-200,651.16-81,738.40

Finding the Fourth Proportional to 145,400.08, 200,651.16 and 81,738.40

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Solution

The fourth proportional to 145,400.08, 200,651.16 and 81,738.40 is: 112,798.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,400.08 : 200,651.16 = 81,738.40 : x
  2. Step 2: Convert to fraction form
    145,400.08/200,651.16 = 81,738.40/x
  3. Step 3: Cross multiply
    145,400.08x = 200,651.16 × 81,738.40
  4. Step 4: Simplify right side
    145,400.08x = 16,400,904,776.54
  5. Step 5: Solve for x
    x = 16,400,904,776.54/145,400.08
  6. Step 6: Final answer
    x = 112,798.46

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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.