Home / 106,398.30-159,628.68-31,520.40

Finding the Fourth Proportional to 106,398.30, 159,628.68 and 31,520.40

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Solution

The fourth proportional to 106,398.30, 159,628.68 and 31,520.40 is: 47,289.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,398.30 : 159,628.68 = 31,520.40 : x
  2. Step 2: Convert to fraction form
    106,398.30/159,628.68 = 31,520.40/x
  3. Step 3: Cross multiply
    106,398.30x = 159,628.68 × 31,520.40
  4. Step 4: Simplify right side
    106,398.30x = 5,031,559,845.07
  5. Step 5: Solve for x
    x = 5,031,559,845.07/106,398.30
  6. Step 6: Final answer
    x = 47,289.85

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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.