Home / 156,781.50-216,362.40-85,161.48

Finding the Fourth Proportional to 156,781.50, 216,362.40 and 85,161.48

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Solution

The fourth proportional to 156,781.50, 216,362.40 and 85,161.48 is: 117,524.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,781.50 : 216,362.40 = 85,161.48 : x
  2. Step 2: Convert to fraction form
    156,781.50/216,362.40 = 85,161.48/x
  3. Step 3: Cross multiply
    156,781.50x = 216,362.40 × 85,161.48
  4. Step 4: Simplify right side
    156,781.50x = 18,425,742,200.35
  5. Step 5: Solve for x
    x = 18,425,742,200.35/156,781.50
  6. Step 6: Final answer
    x = 117,524.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.