Home / 131,443.20-197,164.80-89,971.20

Finding the Fourth Proportional to 131,443.20, 197,164.80 and 89,971.20

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Solution

The fourth proportional to 131,443.20, 197,164.80 and 89,971.20 is: 134,956.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,443.20 : 197,164.80 = 89,971.20 : x
  2. Step 2: Convert to fraction form
    131,443.20/197,164.80 = 89,971.20/x
  3. Step 3: Cross multiply
    131,443.20x = 197,164.80 × 89,971.20
  4. Step 4: Simplify right side
    131,443.20x = 17,739,153,653.76
  5. Step 5: Solve for x
    x = 17,739,153,653.76/131,443.20
  6. Step 6: Final answer
    x = 134,956.80

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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.