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Finding the Fourth Proportional to 104,430.40, 156,645.60 and 72,937.60

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Solution

The fourth proportional to 104,430.40, 156,645.60 and 72,937.60 is: 109,406.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,430.40 : 156,645.60 = 72,937.60 : x
  2. Step 2: Convert to fraction form
    104,430.40/156,645.60 = 72,937.60/x
  3. Step 3: Cross multiply
    104,430.40x = 156,645.60 × 72,937.60
  4. Step 4: Simplify right side
    104,430.40x = 11,425,354,114.56
  5. Step 5: Solve for x
    x = 11,425,354,114.56/104,430.40
  6. Step 6: Final answer
    x = 109,406.40

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1.5x scale

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.