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Finding the Fourth Proportional to 97,474.34, 145,878.83 and 81,697.19

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Solution

The fourth proportional to 97,474.34, 145,878.83 and 81,697.19 is: 122,266.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,474.34 : 145,878.83 = 81,697.19 : x
  2. Step 2: Convert to fraction form
    97,474.34/145,878.83 = 81,697.19/x
  3. Step 3: Cross multiply
    97,474.34x = 145,878.83 × 81,697.19
  4. Step 4: Simplify right side
    97,474.34x = 11,917,889,353.61
  5. Step 5: Solve for x
    x = 11,917,889,353.61/97,474.34
  6. Step 6: Final answer
    x = 122,266.95

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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.