Home / 92,681.32-138,343.70-79,617.64

Finding the Fourth Proportional to 92,681.32, 138,343.70 and 79,617.64

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Solution

The fourth proportional to 92,681.32, 138,343.70 and 79,617.64 is: 118,843.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,681.32 : 138,343.70 = 79,617.64 : x
  2. Step 2: Convert to fraction form
    92,681.32/138,343.70 = 79,617.64/x
  3. Step 3: Cross multiply
    92,681.32x = 138,343.70 × 79,617.64
  4. Step 4: Simplify right side
    92,681.32x = 11,014,598,902.87
  5. Step 5: Solve for x
    x = 11,014,598,902.87/92,681.32
  6. Step 6: Final answer
    x = 118,843.79

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.