Home / 156,420.40-234,630.60-51,242.80

Finding the Fourth Proportional to 156,420.40, 234,630.60 and 51,242.80

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Solution

The fourth proportional to 156,420.40, 234,630.60 and 51,242.80 is: 76,864.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,420.40 : 234,630.60 = 51,242.80 : x
  2. Step 2: Convert to fraction form
    156,420.40/234,630.60 = 51,242.80/x
  3. Step 3: Cross multiply
    156,420.40x = 234,630.60 × 51,242.80
  4. Step 4: Simplify right side
    156,420.40x = 12,023,128,909.68
  5. Step 5: Solve for x
    x = 12,023,128,909.68/156,420.40
  6. Step 6: Final answer
    x = 76,864.20

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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.