Home / 129,567.79-178,742.46-75,819.84

Finding the Fourth Proportional to 129,567.79, 178,742.46 and 75,819.84

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Solution

The fourth proportional to 129,567.79, 178,742.46 and 75,819.84 is: 104,595.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,567.79 : 178,742.46 = 75,819.84 : x
  2. Step 2: Convert to fraction form
    129,567.79/178,742.46 = 75,819.84/x
  3. Step 3: Cross multiply
    129,567.79x = 178,742.46 × 75,819.84
  4. Step 4: Simplify right side
    129,567.79x = 13,552,223,824.69
  5. Step 5: Solve for x
    x = 13,552,223,824.69/129,567.79
  6. Step 6: Final answer
    x = 104,595.62

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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.