Home / 109,629.40-164,444.10-79,740.40

Finding the Fourth Proportional to 109,629.40, 164,444.10 and 79,740.40

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Solution

The fourth proportional to 109,629.40, 164,444.10 and 79,740.40 is: 119,610.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,629.40 : 164,444.10 = 79,740.40 : x
  2. Step 2: Convert to fraction form
    109,629.40/164,444.10 = 79,740.40/x
  3. Step 3: Cross multiply
    109,629.40x = 164,444.10 × 79,740.40
  4. Step 4: Simplify right side
    109,629.40x = 13,112,838,311.64
  5. Step 5: Solve for x
    x = 13,112,838,311.64/109,629.40
  6. Step 6: Final answer
    x = 119,610.60

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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.