Home / 109,639.20-164,458.80-108,602.40

Finding the Fourth Proportional to 109,639.20, 164,458.80 and 108,602.40

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Solution

The fourth proportional to 109,639.20, 164,458.80 and 108,602.40 is: 162,903.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,639.20 : 164,458.80 = 108,602.40 : x
  2. Step 2: Convert to fraction form
    109,639.20/164,458.80 = 108,602.40/x
  3. Step 3: Cross multiply
    109,639.20x = 164,458.80 × 108,602.40
  4. Step 4: Simplify right side
    109,639.20x = 17,860,620,381.12
  5. Step 5: Solve for x
    x = 17,860,620,381.12/109,639.20
  6. Step 6: Final answer
    x = 162,903.60

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1.5x scale

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.