Home / 103,012.15-154,542.19-31,931.02

Finding the Fourth Proportional to 103,012.15, 154,542.19 and 31,931.02

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Solution

The fourth proportional to 103,012.15, 154,542.19 and 31,931.02 is: 47,903.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,012.15 : 154,542.19 = 31,931.02 : x
  2. Step 2: Convert to fraction form
    103,012.15/154,542.19 = 31,931.02/x
  3. Step 3: Cross multiply
    103,012.15x = 154,542.19 × 31,931.02
  4. Step 4: Simplify right side
    103,012.15x = 4,934,689,759.73
  5. Step 5: Solve for x
    x = 4,934,689,759.73/103,012.15
  6. Step 6: Final answer
    x = 47,903.96

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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.