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Finding the Fourth Proportional to 163,685, 245,526.82 and 45,356

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Solution

The fourth proportional to 163,685, 245,526.82 and 45,356 is: 68,033.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,685 : 245,526.82 = 45,356 : x
  2. Step 2: Convert to fraction form
    163,685/245,526.82 = 45,356/x
  3. Step 3: Cross multiply
    163,685x = 245,526.82 × 45,356
  4. Step 4: Simplify right side
    163,685x = 11,136,114,447.92
  5. Step 5: Solve for x
    x = 11,136,114,447.92/163,685
  6. Step 6: Final answer
    x = 68,033.81

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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.