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Finding the Fourth Proportional to 250,495.57, 375,663.16 and 81,970.21

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Solution

The fourth proportional to 250,495.57, 375,663.16 and 81,970.21 is: 122,929.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,495.57 : 375,663.16 = 81,970.21 : x
  2. Step 2: Convert to fraction form
    250,495.57/375,663.16 = 81,970.21/x
  3. Step 3: Cross multiply
    250,495.57x = 375,663.16 × 81,970.21
  4. Step 4: Simplify right side
    250,495.57x = 30,793,188,114.46
  5. Step 5: Solve for x
    x = 30,793,188,114.46/250,495.57
  6. Step 6: Final answer
    x = 122,929.07

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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.