Home / 131,966.80-197,681.40-81,893.20

Finding the Fourth Proportional to 131,966.80, 197,681.40 and 81,893.20

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Solution

The fourth proportional to 131,966.80, 197,681.40 and 81,893.20 is: 122,672.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,966.80 : 197,681.40 = 81,893.20 : x
  2. Step 2: Convert to fraction form
    131,966.80/197,681.40 = 81,893.20/x
  3. Step 3: Cross multiply
    131,966.80x = 197,681.40 × 81,893.20
  4. Step 4: Simplify right side
    131,966.80x = 16,188,762,426.48
  5. Step 5: Solve for x
    x = 16,188,762,426.48/131,966.80
  6. Step 6: Final answer
    x = 122,672.99

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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.