Home / 136,965.57-189,008.85-76,536.71

Finding the Fourth Proportional to 136,965.57, 189,008.85 and 76,536.71

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Solution

The fourth proportional to 136,965.57, 189,008.85 and 76,536.71 is: 105,618.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,965.57 : 189,008.85 = 76,536.71 : x
  2. Step 2: Convert to fraction form
    136,965.57/189,008.85 = 76,536.71/x
  3. Step 3: Cross multiply
    136,965.57x = 189,008.85 × 76,536.71
  4. Step 4: Simplify right side
    136,965.57x = 14,466,114,594.84
  5. Step 5: Solve for x
    x = 14,466,114,594.84/136,965.57
  6. Step 6: Final answer
    x = 105,618.62

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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.