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Finding the Fourth Proportional to 155,352.93, 214,385.00 and 87,369.89

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Solution

The fourth proportional to 155,352.93, 214,385.00 and 87,369.89 is: 120,569.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,352.93 : 214,385.00 = 87,369.89 : x
  2. Step 2: Convert to fraction form
    155,352.93/214,385.00 = 87,369.89/x
  3. Step 3: Cross multiply
    155,352.93x = 214,385.00 × 87,369.89
  4. Step 4: Simplify right side
    155,352.93x = 18,730,792,358.88
  5. Step 5: Solve for x
    x = 18,730,792,358.88/155,352.93
  6. Step 6: Final answer
    x = 120,569.29

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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.