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Finding the Fourth Proportional to 136,574.88, 188,515.02 and 79,228.74

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Solution

The fourth proportional to 136,574.88, 188,515.02 and 79,228.74 is: 109,359.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,574.88 : 188,515.02 = 79,228.74 : x
  2. Step 2: Convert to fraction form
    136,574.88/188,515.02 = 79,228.74/x
  3. Step 3: Cross multiply
    136,574.88x = 188,515.02 × 79,228.74
  4. Step 4: Simplify right side
    136,574.88x = 14,935,807,505.67
  5. Step 5: Solve for x
    x = 14,935,807,505.67/136,574.88
  6. Step 6: Final answer
    x = 109,359.84

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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.