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Finding the Fourth Proportional to 131,710.60, 197,339.10 and 61,445.80

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Solution

The fourth proportional to 131,710.60, 197,339.10 and 61,445.80 is: 92,062.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,710.60 : 197,339.10 = 61,445.80 : x
  2. Step 2: Convert to fraction form
    131,710.60/197,339.10 = 61,445.80/x
  3. Step 3: Cross multiply
    131,710.60x = 197,339.10 × 61,445.80
  4. Step 4: Simplify right side
    131,710.60x = 12,125,658,870.78
  5. Step 5: Solve for x
    x = 12,125,658,870.78/131,710.60
  6. Step 6: Final answer
    x = 92,062.89

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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.