Home / 156,808.49-216,395.55-85,188.03

Finding the Fourth Proportional to 156,808.49, 216,395.55 and 85,188.03

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Solution

The fourth proportional to 156,808.49, 216,395.55 and 85,188.03 is: 117,559.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,808.49 : 216,395.55 = 85,188.03 : x
  2. Step 2: Convert to fraction form
    156,808.49/216,395.55 = 85,188.03/x
  3. Step 3: Cross multiply
    156,808.49x = 216,395.55 × 85,188.03
  4. Step 4: Simplify right side
    156,808.49x = 18,434,310,605.27
  5. Step 5: Solve for x
    x = 18,434,310,605.27/156,808.49
  6. Step 6: Final answer
    x = 117,559.39

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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.