Home / 117,936.60-176,947.56-72,905.28

Finding the Fourth Proportional to 117,936.60, 176,947.56 and 72,905.28

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Solution

The fourth proportional to 117,936.60, 176,947.56 and 72,905.28 is: 109,384.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,936.60 : 176,947.56 = 72,905.28 : x
  2. Step 2: Convert to fraction form
    117,936.60/176,947.56 = 72,905.28/x
  3. Step 3: Cross multiply
    117,936.60x = 176,947.56 × 72,905.28
  4. Step 4: Simplify right side
    117,936.60x = 12,900,411,407.12
  5. Step 5: Solve for x
    x = 12,900,411,407.12/117,936.60
  6. Step 6: Final answer
    x = 109,384.29

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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.