Home / 120,529.92-166,320.10-66,810.36

Finding the Fourth Proportional to 120,529.92, 166,320.10 and 66,810.36

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Solution

The fourth proportional to 120,529.92, 166,320.10 and 66,810.36 is: 92,192.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,529.92 : 166,320.10 = 66,810.36 : x
  2. Step 2: Convert to fraction form
    120,529.92/166,320.10 = 66,810.36/x
  3. Step 3: Cross multiply
    120,529.92x = 166,320.10 × 66,810.36
  4. Step 4: Simplify right side
    120,529.92x = 11,111,905,756.24
  5. Step 5: Solve for x
    x = 11,111,905,756.24/120,529.92
  6. Step 6: Final answer
    x = 92,192.09

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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.