Home / 109,835.20-164,752.80-91,464.40

Finding the Fourth Proportional to 109,835.20, 164,752.80 and 91,464.40

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Solution

The fourth proportional to 109,835.20, 164,752.80 and 91,464.40 is: 137,196.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,835.20 : 164,752.80 = 91,464.40 : x
  2. Step 2: Convert to fraction form
    109,835.20/164,752.80 = 91,464.40/x
  3. Step 3: Cross multiply
    109,835.20x = 164,752.80 × 91,464.40
  4. Step 4: Simplify right side
    109,835.20x = 15,069,016,000.32
  5. Step 5: Solve for x
    x = 15,069,016,000.32/109,835.20
  6. Step 6: Final answer
    x = 137,196.60

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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.