Home / 117,214.78-161,970.96-85,328.32

Finding the Fourth Proportional to 117,214.78, 161,970.96 and 85,328.32

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Solution

The fourth proportional to 117,214.78, 161,970.96 and 85,328.32 is: 117,909.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,214.78 : 161,970.96 = 85,328.32 : x
  2. Step 2: Convert to fraction form
    117,214.78/161,970.96 = 85,328.32/x
  3. Step 3: Cross multiply
    117,214.78x = 161,970.96 × 85,328.32
  4. Step 4: Simplify right side
    117,214.78x = 13,820,709,905.59
  5. Step 5: Solve for x
    x = 13,820,709,905.59/117,214.78
  6. Step 6: Final answer
    x = 117,909.28

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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.