Home / 102,720.20-154,080.30-52,730.60

Finding the Fourth Proportional to 102,720.20, 154,080.30 and 52,730.60

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Solution

The fourth proportional to 102,720.20, 154,080.30 and 52,730.60 is: 79,095.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,720.20 : 154,080.30 = 52,730.60 : x
  2. Step 2: Convert to fraction form
    102,720.20/154,080.30 = 52,730.60/x
  3. Step 3: Cross multiply
    102,720.20x = 154,080.30 × 52,730.60
  4. Step 4: Simplify right side
    102,720.20x = 8,124,746,667.18
  5. Step 5: Solve for x
    x = 8,124,746,667.18/102,720.20
  6. Step 6: Final answer
    x = 79,095.90

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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.