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Finding the Fourth Proportional to 136,384.30, 188,209.80 and 75,955.66

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Solution

The fourth proportional to 136,384.30, 188,209.80 and 75,955.66 is: 104,818.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,384.30 : 188,209.80 = 75,955.66 : x
  2. Step 2: Convert to fraction form
    136,384.30/188,209.80 = 75,955.66/x
  3. Step 3: Cross multiply
    136,384.30x = 188,209.80 × 75,955.66
  4. Step 4: Simplify right side
    136,384.30x = 14,295,599,577.47
  5. Step 5: Solve for x
    x = 14,295,599,577.47/136,384.30
  6. Step 6: Final answer
    x = 104,818.51

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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.