Home / 103,070.20-154,605.30-79,713.40

Finding the Fourth Proportional to 103,070.20, 154,605.30 and 79,713.40

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Solution

The fourth proportional to 103,070.20, 154,605.30 and 79,713.40 is: 119,570.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,070.20 : 154,605.30 = 79,713.40 : x
  2. Step 2: Convert to fraction form
    103,070.20/154,605.30 = 79,713.40/x
  3. Step 3: Cross multiply
    103,070.20x = 154,605.30 × 79,713.40
  4. Step 4: Simplify right side
    103,070.20x = 12,324,114,121.02
  5. Step 5: Solve for x
    x = 12,324,114,121.02/103,070.20
  6. Step 6: Final answer
    x = 119,570.10

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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.