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Finding the Fourth Proportional to 117,155.36, 161,675.16 and 63,440.37

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Solution

The fourth proportional to 117,155.36, 161,675.16 and 63,440.37 is: 87,548.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,155.36 : 161,675.16 = 63,440.37 : x
  2. Step 2: Convert to fraction form
    117,155.36/161,675.16 = 63,440.37/x
  3. Step 3: Cross multiply
    117,155.36x = 161,675.16 × 63,440.37
  4. Step 4: Simplify right side
    117,155.36x = 10,256,731,970.21
  5. Step 5: Solve for x
    x = 10,256,731,970.21/117,155.36
  6. Step 6: Final answer
    x = 87,548.13

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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.