Home / 211,143.09-291,267.05-130,544.85

Finding the Fourth Proportional to 211,143.09, 291,267.05 and 130,544.85

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Solution

The fourth proportional to 211,143.09, 291,267.05 and 130,544.85 is: 180,083.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,143.09 : 291,267.05 = 130,544.85 : x
  2. Step 2: Convert to fraction form
    211,143.09/291,267.05 = 130,544.85/x
  3. Step 3: Cross multiply
    211,143.09x = 291,267.05 × 130,544.85
  4. Step 4: Simplify right side
    211,143.09x = 38,023,412,699.47
  5. Step 5: Solve for x
    x = 38,023,412,699.47/211,143.09
  6. Step 6: Final answer
    x = 180,083.62

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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.