Home / 185,649.21-278,429.18-85,713.39

Finding the Fourth Proportional to 185,649.21, 278,429.18 and 85,713.39

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Solution

The fourth proportional to 185,649.21, 278,429.18 and 85,713.39 is: 128,549.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,649.21 : 278,429.18 = 85,713.39 : x
  2. Step 2: Convert to fraction form
    185,649.21/278,429.18 = 85,713.39/x
  3. Step 3: Cross multiply
    185,649.21x = 278,429.18 × 85,713.39
  4. Step 4: Simplify right side
    185,649.21x = 23,865,108,464.15
  5. Step 5: Solve for x
    x = 23,865,108,464.15/185,649.21
  6. Step 6: Final answer
    x = 128,549.47

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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.