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Finding the Fourth Proportional to 156,328.80, 234,493.20 and 67,520.40

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Solution

The fourth proportional to 156,328.80, 234,493.20 and 67,520.40 is: 101,280.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,328.80 : 234,493.20 = 67,520.40 : x
  2. Step 2: Convert to fraction form
    156,328.80/234,493.20 = 67,520.40/x
  3. Step 3: Cross multiply
    156,328.80x = 234,493.20 × 67,520.40
  4. Step 4: Simplify right side
    156,328.80x = 15,833,074,661.28
  5. Step 5: Solve for x
    x = 15,833,074,661.28/156,328.80
  6. Step 6: Final answer
    x = 101,280.60

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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.