Home / 120,403.68-166,159.40-72,055.32

Finding the Fourth Proportional to 120,403.68, 166,159.40 and 72,055.32

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Solution

The fourth proportional to 120,403.68, 166,159.40 and 72,055.32 is: 99,437.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,403.68 : 166,159.40 = 72,055.32 : x
  2. Step 2: Convert to fraction form
    120,403.68/166,159.40 = 72,055.32/x
  3. Step 3: Cross multiply
    120,403.68x = 166,159.40 × 72,055.32
  4. Step 4: Simplify right side
    120,403.68x = 11,972,668,738.01
  5. Step 5: Solve for x
    x = 11,972,668,738.01/120,403.68
  6. Step 6: Final answer
    x = 99,437.73

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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.