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Finding the Fourth Proportional to 185,814.48, 256,424.40 and 100,929.68

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Solution

The fourth proportional to 185,814.48, 256,424.40 and 100,929.68 is: 139,283.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,814.48 : 256,424.40 = 100,929.68 : x
  2. Step 2: Convert to fraction form
    185,814.48/256,424.40 = 100,929.68/x
  3. Step 3: Cross multiply
    185,814.48x = 256,424.40 × 100,929.68
  4. Step 4: Simplify right side
    185,814.48x = 25,880,832,636.19
  5. Step 5: Solve for x
    x = 25,880,832,636.19/185,814.48
  6. Step 6: Final answer
    x = 139,283.19

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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.