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Finding the Fourth Proportional to 112,470, 155,208.87 and 62,169

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Solution

The fourth proportional to 112,470, 155,208.87 and 62,169 is: 85,793.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,470 : 155,208.87 = 62,169 : x
  2. Step 2: Convert to fraction form
    112,470/155,208.87 = 62,169/x
  3. Step 3: Cross multiply
    112,470x = 155,208.87 × 62,169
  4. Step 4: Simplify right side
    112,470x = 9,649,180,239.03
  5. Step 5: Solve for x
    x = 9,649,180,239.03/112,470
  6. Step 6: Final answer
    x = 85,793.37

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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.