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Finding the Fourth Proportional to 117,499.79, 176,243.47 and 72,529.67

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Solution

The fourth proportional to 117,499.79, 176,243.47 and 72,529.67 is: 108,790.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,499.79 : 176,243.47 = 72,529.67 : x
  2. Step 2: Convert to fraction form
    117,499.79/176,243.47 = 72,529.67/x
  3. Step 3: Cross multiply
    117,499.79x = 176,243.47 × 72,529.67
  4. Step 4: Simplify right side
    117,499.79x = 12,782,880,718.75
  5. Step 5: Solve for x
    x = 12,782,880,718.75/117,499.79
  6. Step 6: Final answer
    x = 108,790.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.