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Finding the Fourth Proportional to 103,360.58, 142,644.70 and 57,425.76

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Solution

The fourth proportional to 103,360.58, 142,644.70 and 57,425.76 is: 79,251.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,360.58 : 142,644.70 = 57,425.76 : x
  2. Step 2: Convert to fraction form
    103,360.58/142,644.70 = 57,425.76/x
  3. Step 3: Cross multiply
    103,360.58x = 142,644.70 × 57,425.76
  4. Step 4: Simplify right side
    103,360.58x = 8,191,480,056.23
  5. Step 5: Solve for x
    x = 8,191,480,056.23/103,360.58
  6. Step 6: Final answer
    x = 79,251.49

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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.