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Finding the Fourth Proportional to 156,048.80, 234,073.20 and 137,969.60

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Solution

The fourth proportional to 156,048.80, 234,073.20 and 137,969.60 is: 206,954.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,048.80 : 234,073.20 = 137,969.60 : x
  2. Step 2: Convert to fraction form
    156,048.80/234,073.20 = 137,969.60/x
  3. Step 3: Cross multiply
    156,048.80x = 234,073.20 × 137,969.60
  4. Step 4: Simplify right side
    156,048.80x = 32,294,985,774.72
  5. Step 5: Solve for x
    x = 32,294,985,774.72/156,048.80
  6. Step 6: Final answer
    x = 206,954.40

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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.