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Finding the Fourth Proportional to 131,423.97, 181,364.88 and 70,994.60

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Solution

The fourth proportional to 131,423.97, 181,364.88 and 70,994.60 is: 97,972.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,423.97 : 181,364.88 = 70,994.60 : x
  2. Step 2: Convert to fraction form
    131,423.97/181,364.88 = 70,994.60/x
  3. Step 3: Cross multiply
    131,423.97x = 181,364.88 × 70,994.60
  4. Step 4: Simplify right side
    131,423.97x = 12,875,926,202.82
  5. Step 5: Solve for x
    x = 12,875,926,202.82/131,423.97
  6. Step 6: Final answer
    x = 97,972.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.