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Finding the Fourth Proportional to 131,648.80, 197,492.40 and 42,906.40

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Solution

The fourth proportional to 131,648.80, 197,492.40 and 42,906.40 is: 64,365.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,648.80 : 197,492.40 = 42,906.40 : x
  2. Step 2: Convert to fraction form
    131,648.80/197,492.40 = 42,906.40/x
  3. Step 3: Cross multiply
    131,648.80x = 197,492.40 × 42,906.40
  4. Step 4: Simplify right side
    131,648.80x = 8,473,687,911.36
  5. Step 5: Solve for x
    x = 8,473,687,911.36/131,648.80
  6. Step 6: Final answer
    x = 64,365.86

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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.