Home / 211,026.16-291,219.78-130,451.68

Finding the Fourth Proportional to 211,026.16, 291,219.78 and 130,451.68

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Solution

The fourth proportional to 211,026.16, 291,219.78 and 130,451.68 is: 180,025.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,026.16 : 291,219.78 = 130,451.68 : x
  2. Step 2: Convert to fraction form
    211,026.16/291,219.78 = 130,451.68/x
  3. Step 3: Cross multiply
    211,026.16x = 291,219.78 × 130,451.68
  4. Step 4: Simplify right side
    211,026.16x = 37,990,109,550.23
  5. Step 5: Solve for x
    x = 37,990,109,550.23/211,026.16
  6. Step 6: Final answer
    x = 180,025.59

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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.