Home / 210,966.18-291,131.07-120,319.80

Finding the Fourth Proportional to 210,966.18, 291,131.07 and 120,319.80

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Solution

The fourth proportional to 210,966.18, 291,131.07 and 120,319.80 is: 166,040.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,966.18 : 291,131.07 = 120,319.80 : x
  2. Step 2: Convert to fraction form
    210,966.18/291,131.07 = 120,319.80/x
  3. Step 3: Cross multiply
    210,966.18x = 291,131.07 × 120,319.80
  4. Step 4: Simplify right side
    210,966.18x = 35,028,832,116.19
  5. Step 5: Solve for x
    x = 35,028,832,116.19/210,966.18
  6. Step 6: Final answer
    x = 166,040.04

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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.