Home / 117,140.42-161,532.96-100,200.74

Finding the Fourth Proportional to 117,140.42, 161,532.96 and 100,200.74

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Solution

The fourth proportional to 117,140.42, 161,532.96 and 100,200.74 is: 138,173.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,140.42 : 161,532.96 = 100,200.74 : x
  2. Step 2: Convert to fraction form
    117,140.42/161,532.96 = 100,200.74/x
  3. Step 3: Cross multiply
    117,140.42x = 161,532.96 × 100,200.74
  4. Step 4: Simplify right side
    117,140.42x = 16,185,721,851.60
  5. Step 5: Solve for x
    x = 16,185,721,851.60/117,140.42
  6. Step 6: Final answer
    x = 138,173.67

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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.