Home / 107,827.02-161,543.43-78,171.30

Finding the Fourth Proportional to 107,827.02, 161,543.43 and 78,171.30

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Solution

The fourth proportional to 107,827.02, 161,543.43 and 78,171.30 is: 117,114.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,827.02 : 161,543.43 = 78,171.30 : x
  2. Step 2: Convert to fraction form
    107,827.02/161,543.43 = 78,171.30/x
  3. Step 3: Cross multiply
    107,827.02x = 161,543.43 × 78,171.30
  4. Step 4: Simplify right side
    107,827.02x = 12,628,059,929.56
  5. Step 5: Solve for x
    x = 12,628,059,929.56/107,827.02
  6. Step 6: Final answer
    x = 117,114.06

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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.