Home / 91,192.31-136,836.62-64,709.42

Finding the Fourth Proportional to 91,192.31, 136,836.62 and 64,709.42

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Solution

The fourth proportional to 91,192.31, 136,836.62 and 64,709.42 is: 97,098.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,192.31 : 136,836.62 = 64,709.42 : x
  2. Step 2: Convert to fraction form
    91,192.31/136,836.62 = 64,709.42/x
  3. Step 3: Cross multiply
    91,192.31x = 136,836.62 × 64,709.42
  4. Step 4: Simplify right side
    91,192.31x = 8,854,617,913.88
  5. Step 5: Solve for x
    x = 8,854,617,913.88/91,192.31
  6. Step 6: Final answer
    x = 97,098.29

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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.