Home / 102,123.42-140,872.80-61,276.98

Finding the Fourth Proportional to 102,123.42, 140,872.80 and 61,276.98

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Solution

The fourth proportional to 102,123.42, 140,872.80 and 61,276.98 is: 84,527.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,123.42 : 140,872.80 = 61,276.98 : x
  2. Step 2: Convert to fraction form
    102,123.42/140,872.80 = 61,276.98/x
  3. Step 3: Cross multiply
    102,123.42x = 140,872.80 × 61,276.98
  4. Step 4: Simplify right side
    102,123.42x = 8,632,259,748.14
  5. Step 5: Solve for x
    x = 8,632,259,748.14/102,123.42
  6. Step 6: Final answer
    x = 84,527.72

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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.