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Finding the Fourth Proportional to 114,989.67, 158,685.69 and 64,688.67

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Solution

The fourth proportional to 114,989.67, 158,685.69 and 64,688.67 is: 89,270.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,989.67 : 158,685.69 = 64,688.67 : x
  2. Step 2: Convert to fraction form
    114,989.67/158,685.69 = 64,688.67/x
  3. Step 3: Cross multiply
    114,989.67x = 158,685.69 × 64,688.67
  4. Step 4: Simplify right side
    114,989.67x = 10,265,166,234.13
  5. Step 5: Solve for x
    x = 10,265,166,234.13/114,989.67
  6. Step 6: Final answer
    x = 89,270.33

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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.