Home / 85,110.81-117,343.12-69,740.20

Finding the Fourth Proportional to 85,110.81, 117,343.12 and 69,740.20

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Solution

The fourth proportional to 85,110.81, 117,343.12 and 69,740.20 is: 96,151.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,110.81 : 117,343.12 = 69,740.20 : x
  2. Step 2: Convert to fraction form
    85,110.81/117,343.12 = 69,740.20/x
  3. Step 3: Cross multiply
    85,110.81x = 117,343.12 × 69,740.20
  4. Step 4: Simplify right side
    85,110.81x = 8,183,532,657.42
  5. Step 5: Solve for x
    x = 8,183,532,657.42/85,110.81
  6. Step 6: Final answer
    x = 96,151.51

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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.