Home / 120,477.77-166,263.62-72,721.79

Finding the Fourth Proportional to 120,477.77, 166,263.62 and 72,721.79

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Solution

The fourth proportional to 120,477.77, 166,263.62 and 72,721.79 is: 100,358.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,477.77 : 166,263.62 = 72,721.79 : x
  2. Step 2: Convert to fraction form
    120,477.77/166,263.62 = 72,721.79/x
  3. Step 3: Cross multiply
    120,477.77x = 166,263.62 × 72,721.79
  4. Step 4: Simplify right side
    120,477.77x = 12,090,988,110.33
  5. Step 5: Solve for x
    x = 12,090,988,110.33/120,477.77
  6. Step 6: Final answer
    x = 100,358.66

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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.