Home / 131,630.64-197,321.40-81,060.74

Finding the Fourth Proportional to 131,630.64, 197,321.40 and 81,060.74

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Solution

The fourth proportional to 131,630.64, 197,321.40 and 81,060.74 is: 121,514.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,630.64 : 197,321.40 = 81,060.74 : x
  2. Step 2: Convert to fraction form
    131,630.64/197,321.40 = 81,060.74/x
  3. Step 3: Cross multiply
    131,630.64x = 197,321.40 × 81,060.74
  4. Step 4: Simplify right side
    131,630.64x = 15,995,018,701.84
  5. Step 5: Solve for x
    x = 15,995,018,701.84/131,630.64
  6. Step 6: Final answer
    x = 121,514.40

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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.