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Finding the Fourth Proportional to 103,981.60, 156,041.60 and 56,608.64

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Solution

The fourth proportional to 103,981.60, 156,041.60 and 56,608.64 is: 84,950.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,981.60 : 156,041.60 = 56,608.64 : x
  2. Step 2: Convert to fraction form
    103,981.60/156,041.60 = 56,608.64/x
  3. Step 3: Cross multiply
    103,981.60x = 156,041.60 × 56,608.64
  4. Step 4: Simplify right side
    103,981.60x = 8,833,302,759.42
  5. Step 5: Solve for x
    x = 8,833,302,759.42/103,981.60
  6. Step 6: Final answer
    x = 84,950.63

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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.