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Finding the Fourth Proportional to 163,585.72, 245,378.70 and 51,274.72

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Solution

The fourth proportional to 163,585.72, 245,378.70 and 51,274.72 is: 76,912.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,585.72 : 245,378.70 = 51,274.72 : x
  2. Step 2: Convert to fraction form
    163,585.72/245,378.70 = 51,274.72/x
  3. Step 3: Cross multiply
    163,585.72x = 245,378.70 × 51,274.72
  4. Step 4: Simplify right side
    163,585.72x = 12,581,724,136.46
  5. Step 5: Solve for x
    x = 12,581,724,136.46/163,585.72
  6. Step 6: Final answer
    x = 76,912.12

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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.