Home / 212,460.30-293,245.08-121,814.64

Finding the Fourth Proportional to 212,460.30, 293,245.08 and 121,814.64

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Solution

The fourth proportional to 212,460.30, 293,245.08 and 121,814.64 is: 168,132.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,460.30 : 293,245.08 = 121,814.64 : x
  2. Step 2: Convert to fraction form
    212,460.30/293,245.08 = 121,814.64/x
  3. Step 3: Cross multiply
    212,460.30x = 293,245.08 × 121,814.64
  4. Step 4: Simplify right side
    212,460.30x = 35,721,543,851.97
  5. Step 5: Solve for x
    x = 35,721,543,851.97/212,460.30
  6. Step 6: Final answer
    x = 168,132.79

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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.