Home / 102,020.20-153,030.30-31,906.60

Finding the Fourth Proportional to 102,020.20, 153,030.30 and 31,906.60

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Solution

The fourth proportional to 102,020.20, 153,030.30 and 31,906.60 is: 47,859.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,020.20 : 153,030.30 = 31,906.60 : x
  2. Step 2: Convert to fraction form
    102,020.20/153,030.30 = 31,906.60/x
  3. Step 3: Cross multiply
    102,020.20x = 153,030.30 × 31,906.60
  4. Step 4: Simplify right side
    102,020.20x = 4,882,676,569.98
  5. Step 5: Solve for x
    x = 4,882,676,569.98/102,020.20
  6. Step 6: Final answer
    x = 47,859.90

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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.