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Finding the Fourth Proportional to 155,590, 214,701.43 and 87,585.24

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Solution

The fourth proportional to 155,590, 214,701.43 and 87,585.24 is: 120,860.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,590 : 214,701.43 = 87,585.24 : x
  2. Step 2: Convert to fraction form
    155,590/214,701.43 = 87,585.24/x
  3. Step 3: Cross multiply
    155,590x = 214,701.43 × 87,585.24
  4. Step 4: Simplify right side
    155,590x = 18,804,676,274.89
  5. Step 5: Solve for x
    x = 18,804,676,274.89/155,590
  6. Step 6: Final answer
    x = 120,860.44

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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.