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Finding the Fourth Proportional to 131,648.95, 197,493.90 and 42,881.80

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Solution

The fourth proportional to 131,648.95, 197,493.90 and 42,881.80 is: 64,329.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,648.95 : 197,493.90 = 42,881.80 : x
  2. Step 2: Convert to fraction form
    131,648.95/197,493.90 = 42,881.80/x
  3. Step 3: Cross multiply
    131,648.95x = 197,493.90 × 42,881.80
  4. Step 4: Simplify right side
    131,648.95x = 8,468,893,921.02
  5. Step 5: Solve for x
    x = 8,468,893,921.02/131,648.95
  6. Step 6: Final answer
    x = 64,329.37

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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.