Home / 120,528.42-166,325.85-72,764.34

Finding the Fourth Proportional to 120,528.42, 166,325.85 and 72,764.34

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Solution

The fourth proportional to 120,528.42, 166,325.85 and 72,764.34 is: 100,412.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,528.42 : 166,325.85 = 72,764.34 : x
  2. Step 2: Convert to fraction form
    120,528.42/166,325.85 = 72,764.34/x
  3. Step 3: Cross multiply
    120,528.42x = 166,325.85 × 72,764.34
  4. Step 4: Simplify right side
    120,528.42x = 12,102,590,700.19
  5. Step 5: Solve for x
    x = 12,102,590,700.19/120,528.42
  6. Step 6: Final answer
    x = 100,412.75

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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.