Home / 153,212.06-211,416.50-85,217.96

Finding the Fourth Proportional to 153,212.06, 211,416.50 and 85,217.96

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Solution

The fourth proportional to 153,212.06, 211,416.50 and 85,217.96 is: 117,591.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,212.06 : 211,416.50 = 85,217.96 : x
  2. Step 2: Convert to fraction form
    153,212.06/211,416.50 = 85,217.96/x
  3. Step 3: Cross multiply
    153,212.06x = 211,416.50 × 85,217.96
  4. Step 4: Simplify right side
    153,212.06x = 18,016,482,840.34
  5. Step 5: Solve for x
    x = 18,016,482,840.34/153,212.06
  6. Step 6: Final answer
    x = 117,591.81

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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.