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Finding the Fourth Proportional to 145,696.59, 201,086.96 and 139,048.11

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Solution

The fourth proportional to 145,696.59, 201,086.96 and 139,048.11 is: 191,910.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,696.59 : 201,086.96 = 139,048.11 : x
  2. Step 2: Convert to fraction form
    145,696.59/201,086.96 = 139,048.11/x
  3. Step 3: Cross multiply
    145,696.59x = 201,086.96 × 139,048.11
  4. Step 4: Simplify right side
    145,696.59x = 27,960,761,038.41
  5. Step 5: Solve for x
    x = 27,960,761,038.41/145,696.59
  6. Step 6: Final answer
    x = 191,910.88

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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.