Home / 109,040.80-163,582.80-91,631.20

Finding the Fourth Proportional to 109,040.80, 163,582.80 and 91,631.20

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Solution

The fourth proportional to 109,040.80, 163,582.80 and 91,631.20 is: 137,464.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,040.80 : 163,582.80 = 91,631.20 : x
  2. Step 2: Convert to fraction form
    109,040.80/163,582.80 = 91,631.20/x
  3. Step 3: Cross multiply
    109,040.80x = 163,582.80 × 91,631.20
  4. Step 4: Simplify right side
    109,040.80x = 14,989,288,263.36
  5. Step 5: Solve for x
    x = 14,989,288,263.36/109,040.80
  6. Step 6: Final answer
    x = 137,464.95

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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.