Home / 212,688.48-319,180-84,591.64

Finding the Fourth Proportional to 212,688.48, 319,180 and 84,591.64

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Solution

The fourth proportional to 212,688.48, 319,180 and 84,591.64 is: 126,946.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,688.48 : 319,180 = 84,591.64 : x
  2. Step 2: Convert to fraction form
    212,688.48/319,180 = 84,591.64/x
  3. Step 3: Cross multiply
    212,688.48x = 319,180 × 84,591.64
  4. Step 4: Simplify right side
    212,688.48x = 26,999,959,655.20
  5. Step 5: Solve for x
    x = 26,999,959,655.20/212,688.48
  6. Step 6: Final answer
    x = 126,946.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.