Home / 189,106.08-283,628.10-76,781.76

Finding the Fourth Proportional to 189,106.08, 283,628.10 and 76,781.76

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Solution

The fourth proportional to 189,106.08, 283,628.10 and 76,781.76 is: 115,160.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,106.08 : 283,628.10 = 76,781.76 : x
  2. Step 2: Convert to fraction form
    189,106.08/283,628.10 = 76,781.76/x
  3. Step 3: Cross multiply
    189,106.08x = 283,628.10 × 76,781.76
  4. Step 4: Simplify right side
    189,106.08x = 21,777,464,703.46
  5. Step 5: Solve for x
    x = 21,777,464,703.46/189,106.08
  6. Step 6: Final answer
    x = 115,160.05

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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.