Home / 211,518.80-291,730.98-130,991.03

Finding the Fourth Proportional to 211,518.80, 291,730.98 and 130,991.03

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Solution

The fourth proportional to 211,518.80, 291,730.98 and 130,991.03 is: 180,665.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,518.80 : 291,730.98 = 130,991.03 : x
  2. Step 2: Convert to fraction form
    211,518.80/291,730.98 = 130,991.03/x
  3. Step 3: Cross multiply
    211,518.80x = 291,730.98 × 130,991.03
  4. Step 4: Simplify right side
    211,518.80x = 38,214,141,553.11
  5. Step 5: Solve for x
    x = 38,214,141,553.11/211,518.80
  6. Step 6: Final answer
    x = 180,665.46

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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.