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Finding the Fourth Proportional to 104,606.40, 156,909.60 and 64,657.20

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Solution

The fourth proportional to 104,606.40, 156,909.60 and 64,657.20 is: 96,985.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,606.40 : 156,909.60 = 64,657.20 : x
  2. Step 2: Convert to fraction form
    104,606.40/156,909.60 = 64,657.20/x
  3. Step 3: Cross multiply
    104,606.40x = 156,909.60 × 64,657.20
  4. Step 4: Simplify right side
    104,606.40x = 10,145,335,389.12
  5. Step 5: Solve for x
    x = 10,145,335,389.12/104,606.40
  6. Step 6: Final answer
    x = 96,985.80

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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.