Home / 120,983.40-166,893.12-71,897.22

Finding the Fourth Proportional to 120,983.40, 166,893.12 and 71,897.22

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Solution

The fourth proportional to 120,983.40, 166,893.12 and 71,897.22 is: 99,180.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,983.40 : 166,893.12 = 71,897.22 : x
  2. Step 2: Convert to fraction form
    120,983.40/166,893.12 = 71,897.22/x
  3. Step 3: Cross multiply
    120,983.40x = 166,893.12 × 71,897.22
  4. Step 4: Simplify right side
    120,983.40x = 11,999,151,365.13
  5. Step 5: Solve for x
    x = 11,999,151,365.13/120,983.40
  6. Step 6: Final answer
    x = 99,180.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.