Home / 120,356.04-166,039-72,582.84

Finding the Fourth Proportional to 120,356.04, 166,039 and 72,582.84

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Solution

The fourth proportional to 120,356.04, 166,039 and 72,582.84 is: 100,132.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,356.04 : 166,039 = 72,582.84 : x
  2. Step 2: Convert to fraction form
    120,356.04/166,039 = 72,582.84/x
  3. Step 3: Cross multiply
    120,356.04x = 166,039 × 72,582.84
  4. Step 4: Simplify right side
    120,356.04x = 12,051,582,170.76
  5. Step 5: Solve for x
    x = 12,051,582,170.76/120,356.04
  6. Step 6: Final answer
    x = 100,132.76

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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.