Home / 91,822.70-137,539.65-81,973.10

Finding the Fourth Proportional to 91,822.70, 137,539.65 and 81,973.10

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Solution

The fourth proportional to 91,822.70, 137,539.65 and 81,973.10 is: 122,786.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,822.70 : 137,539.65 = 81,973.10 : x
  2. Step 2: Convert to fraction form
    91,822.70/137,539.65 = 81,973.10/x
  3. Step 3: Cross multiply
    91,822.70x = 137,539.65 × 81,973.10
  4. Step 4: Simplify right side
    91,822.70x = 11,274,551,483.42
  5. Step 5: Solve for x
    x = 11,274,551,483.42/91,822.70
  6. Step 6: Final answer
    x = 122,786.10

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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.