Home / 210,973.12-291,143.22-115,485.86

Finding the Fourth Proportional to 210,973.12, 291,143.22 and 115,485.86

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Solution

The fourth proportional to 210,973.12, 291,143.22 and 115,485.86 is: 159,370.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,973.12 : 291,143.22 = 115,485.86 : x
  2. Step 2: Convert to fraction form
    210,973.12/291,143.22 = 115,485.86/x
  3. Step 3: Cross multiply
    210,973.12x = 291,143.22 × 115,485.86
  4. Step 4: Simplify right side
    210,973.12x = 33,622,925,144.87
  5. Step 5: Solve for x
    x = 33,622,925,144.87/210,973.12
  6. Step 6: Final answer
    x = 159,370.66

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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.