Home / 156,967.90-216,609.78-85,345.45

Finding the Fourth Proportional to 156,967.90, 216,609.78 and 85,345.45

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Solution

The fourth proportional to 156,967.90, 216,609.78 and 85,345.45 is: 117,773.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,967.90 : 216,609.78 = 85,345.45 : x
  2. Step 2: Convert to fraction form
    156,967.90/216,609.78 = 85,345.45/x
  3. Step 3: Cross multiply
    156,967.90x = 216,609.78 × 85,345.45
  4. Step 4: Simplify right side
    156,967.90x = 18,486,659,148.50
  5. Step 5: Solve for x
    x = 18,486,659,148.50/156,967.90
  6. Step 6: Final answer
    x = 117,773.50

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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.