Home / 286,107.12-429,316.20-120,011.76

Finding the Fourth Proportional to 286,107.12, 429,316.20 and 120,011.76

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Solution

The fourth proportional to 286,107.12, 429,316.20 and 120,011.76 is: 180,082.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,107.12 : 429,316.20 = 120,011.76 : x
  2. Step 2: Convert to fraction form
    286,107.12/429,316.20 = 120,011.76/x
  3. Step 3: Cross multiply
    286,107.12x = 429,316.20 × 120,011.76
  4. Step 4: Simplify right side
    286,107.12x = 51,522,992,758.51
  5. Step 5: Solve for x
    x = 51,522,992,758.51/286,107.12
  6. Step 6: Final answer
    x = 180,082.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.