Home / 102,800.20-154,200.30-79,443.40

Finding the Fourth Proportional to 102,800.20, 154,200.30 and 79,443.40

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Solution

The fourth proportional to 102,800.20, 154,200.30 and 79,443.40 is: 119,165.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,800.20 : 154,200.30 = 79,443.40 : x
  2. Step 2: Convert to fraction form
    102,800.20/154,200.30 = 79,443.40/x
  3. Step 3: Cross multiply
    102,800.20x = 154,200.30 × 79,443.40
  4. Step 4: Simplify right side
    102,800.20x = 12,250,196,113.02
  5. Step 5: Solve for x
    x = 12,250,196,113.02/102,800.20
  6. Step 6: Final answer
    x = 119,165.10

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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.