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Finding the Fourth Proportional to 97,479.59, 145,886.70 and 81,702.43

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Solution

The fourth proportional to 97,479.59, 145,886.70 and 81,702.43 is: 122,274.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,479.59 : 145,886.70 = 81,702.43 : x
  2. Step 2: Convert to fraction form
    97,479.59/145,886.70 = 81,702.43/x
  3. Step 3: Cross multiply
    97,479.59x = 145,886.70 × 81,702.43
  4. Step 4: Simplify right side
    97,479.59x = 11,919,297,894.68
  5. Step 5: Solve for x
    x = 11,919,297,894.68/97,479.59
  6. Step 6: Final answer
    x = 122,274.81

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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.