Home / 138,927.60-208,099.80-76,525.20

Finding the Fourth Proportional to 138,927.60, 208,099.80 and 76,525.20

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Solution

The fourth proportional to 138,927.60, 208,099.80 and 76,525.20 is: 114,627.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,927.60 : 208,099.80 = 76,525.20 : x
  2. Step 2: Convert to fraction form
    138,927.60/208,099.80 = 76,525.20/x
  3. Step 3: Cross multiply
    138,927.60x = 208,099.80 × 76,525.20
  4. Step 4: Simplify right side
    138,927.60x = 15,924,878,814.96
  5. Step 5: Solve for x
    x = 15,924,878,814.96/138,927.60
  6. Step 6: Final answer
    x = 114,627.18

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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.