Home / 100,857.45-151,309.87-56,514.81

Finding the Fourth Proportional to 100,857.45, 151,309.87 and 56,514.81

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Solution

The fourth proportional to 100,857.45, 151,309.87 and 56,514.81 is: 84,785.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,857.45 : 151,309.87 = 56,514.81 : x
  2. Step 2: Convert to fraction form
    100,857.45/151,309.87 = 56,514.81/x
  3. Step 3: Cross multiply
    100,857.45x = 151,309.87 × 56,514.81
  4. Step 4: Simplify right side
    100,857.45x = 8,551,249,298.20
  5. Step 5: Solve for x
    x = 8,551,249,298.20/100,857.45
  6. Step 6: Final answer
    x = 84,785.50

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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.