Home / 102,928.80-154,393.20-91,264.80

Finding the Fourth Proportional to 102,928.80, 154,393.20 and 91,264.80

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Solution

The fourth proportional to 102,928.80, 154,393.20 and 91,264.80 is: 136,897.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,928.80 : 154,393.20 = 91,264.80 : x
  2. Step 2: Convert to fraction form
    102,928.80/154,393.20 = 91,264.80/x
  3. Step 3: Cross multiply
    102,928.80x = 154,393.20 × 91,264.80
  4. Step 4: Simplify right side
    102,928.80x = 14,090,664,519.36
  5. Step 5: Solve for x
    x = 14,090,664,519.36/102,928.80
  6. Step 6: Final answer
    x = 136,897.20

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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.