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Finding the Fourth Proportional to 103,359.78, 142,652.10 and 63,096.98

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Solution

The fourth proportional to 103,359.78, 142,652.10 and 63,096.98 is: 87,083.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,359.78 : 142,652.10 = 63,096.98 : x
  2. Step 2: Convert to fraction form
    103,359.78/142,652.10 = 63,096.98/x
  3. Step 3: Cross multiply
    103,359.78x = 142,652.10 × 63,096.98
  4. Step 4: Simplify right side
    103,359.78x = 9,000,916,700.66
  5. Step 5: Solve for x
    x = 9,000,916,700.66/103,359.78
  6. Step 6: Final answer
    x = 87,083.36

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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.