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Finding the Fourth Proportional to 156,978.73, 235,476.27 and 51,805.90

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Solution

The fourth proportional to 156,978.73, 235,476.27 and 51,805.90 is: 77,711.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,978.73 : 235,476.27 = 51,805.90 : x
  2. Step 2: Convert to fraction form
    156,978.73/235,476.27 = 51,805.90/x
  3. Step 3: Cross multiply
    156,978.73x = 235,476.27 × 51,805.90
  4. Step 4: Simplify right side
    156,978.73x = 12,199,060,095.99
  5. Step 5: Solve for x
    x = 12,199,060,095.99/156,978.73
  6. Step 6: Final answer
    x = 77,711.55

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.