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Finding the Fourth Proportional to 131,434.60, 197,022.30 and 64,820.20

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Solution

The fourth proportional to 131,434.60, 197,022.30 and 64,820.20 is: 97,166.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,434.60 : 197,022.30 = 64,820.20 : x
  2. Step 2: Convert to fraction form
    131,434.60/197,022.30 = 64,820.20/x
  3. Step 3: Cross multiply
    131,434.60x = 197,022.30 × 64,820.20
  4. Step 4: Simplify right side
    131,434.60x = 12,771,024,890.46
  5. Step 5: Solve for x
    x = 12,771,024,890.46/131,434.60
  6. Step 6: Final answer
    x = 97,166.38

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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.