Home / 120,507.06-166,304.01-72,751.08

Finding the Fourth Proportional to 120,507.06, 166,304.01 and 72,751.08

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Solution

The fourth proportional to 120,507.06, 166,304.01 and 72,751.08 is: 100,399.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,507.06 : 166,304.01 = 72,751.08 : x
  2. Step 2: Convert to fraction form
    120,507.06/166,304.01 = 72,751.08/x
  3. Step 3: Cross multiply
    120,507.06x = 166,304.01 × 72,751.08
  4. Step 4: Simplify right side
    120,507.06x = 12,098,796,335.83
  5. Step 5: Solve for x
    x = 12,098,796,335.83/120,507.06
  6. Step 6: Final answer
    x = 100,399.07

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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.