Home / 145,018.32-200,107.80-80,487.24

Finding the Fourth Proportional to 145,018.32, 200,107.80 and 80,487.24

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Solution

The fourth proportional to 145,018.32, 200,107.80 and 80,487.24 is: 111,062.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,018.32 : 200,107.80 = 80,487.24 : x
  2. Step 2: Convert to fraction form
    145,018.32/200,107.80 = 80,487.24/x
  3. Step 3: Cross multiply
    145,018.32x = 200,107.80 × 80,487.24
  4. Step 4: Simplify right side
    145,018.32x = 16,106,124,524.47
  5. Step 5: Solve for x
    x = 16,106,124,524.47/145,018.32
  6. Step 6: Final answer
    x = 111,062.69

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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.