Home / 131,720.40-197,589.09-46,320.78

Finding the Fourth Proportional to 131,720.40, 197,589.09 and 46,320.78

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Solution

The fourth proportional to 131,720.40, 197,589.09 and 46,320.78 is: 69,484.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,720.40 : 197,589.09 = 46,320.78 : x
  2. Step 2: Convert to fraction form
    131,720.40/197,589.09 = 46,320.78/x
  3. Step 3: Cross multiply
    131,720.40x = 197,589.09 × 46,320.78
  4. Step 4: Simplify right side
    131,720.40x = 9,152,480,768.29
  5. Step 5: Solve for x
    x = 9,152,480,768.29/131,720.40
  6. Step 6: Final answer
    x = 69,484.16

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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.