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Finding the Fourth Proportional to 140,330.80, 210,567.30 and 61,445.80

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Solution

The fourth proportional to 140,330.80, 210,567.30 and 61,445.80 is: 92,199.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,330.80 : 210,567.30 = 61,445.80 : x
  2. Step 2: Convert to fraction form
    140,330.80/210,567.30 = 61,445.80/x
  3. Step 3: Cross multiply
    140,330.80x = 210,567.30 × 61,445.80
  4. Step 4: Simplify right side
    140,330.80x = 12,938,476,202.34
  5. Step 5: Solve for x
    x = 12,938,476,202.34/140,330.80
  6. Step 6: Final answer
    x = 92,199.83

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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.