Home / 210,971.12-291,140.46-115,483.86

Finding the Fourth Proportional to 210,971.12, 291,140.46 and 115,483.86

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Solution

The fourth proportional to 210,971.12, 291,140.46 and 115,483.86 is: 159,367.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,971.12 : 291,140.46 = 115,483.86 : x
  2. Step 2: Convert to fraction form
    210,971.12/291,140.46 = 115,483.86/x
  3. Step 3: Cross multiply
    210,971.12x = 291,140.46 × 115,483.86
  4. Step 4: Simplify right side
    210,971.12x = 33,622,024,122.98
  5. Step 5: Solve for x
    x = 33,622,024,122.98/210,971.12
  6. Step 6: Final answer
    x = 159,367.90

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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.