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Finding the Fourth Proportional to 131,995.80, 197,820.90 and 53,045.40

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Solution

The fourth proportional to 131,995.80, 197,820.90 and 53,045.40 is: 79,498.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,995.80 : 197,820.90 = 53,045.40 : x
  2. Step 2: Convert to fraction form
    131,995.80/197,820.90 = 53,045.40/x
  3. Step 3: Cross multiply
    131,995.80x = 197,820.90 × 53,045.40
  4. Step 4: Simplify right side
    131,995.80x = 10,493,488,768.86
  5. Step 5: Solve for x
    x = 10,493,488,768.86/131,995.80
  6. Step 6: Final answer
    x = 79,498.66

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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.