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Finding the Fourth Proportional to 163,641.67, 245,434.66 and 45,285.28

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Solution

The fourth proportional to 163,641.67, 245,434.66 and 45,285.28 is: 67,920.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,641.67 : 245,434.66 = 45,285.28 : x
  2. Step 2: Convert to fraction form
    163,641.67/245,434.66 = 45,285.28/x
  3. Step 3: Cross multiply
    163,641.67x = 245,434.66 × 45,285.28
  4. Step 4: Simplify right side
    163,641.67x = 11,114,576,573.01
  5. Step 5: Solve for x
    x = 11,114,576,573.01/163,641.67
  6. Step 6: Final answer
    x = 67,920.21

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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.