Home / 117,130.10-161,639.30-63,415.10

Finding the Fourth Proportional to 117,130.10, 161,639.30 and 63,415.10

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Solution

The fourth proportional to 117,130.10, 161,639.30 and 63,415.10 is: 87,512.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,130.10 : 161,639.30 = 63,415.10 : x
  2. Step 2: Convert to fraction form
    117,130.10/161,639.30 = 63,415.10/x
  3. Step 3: Cross multiply
    117,130.10x = 161,639.30 × 63,415.10
  4. Step 4: Simplify right side
    117,130.10x = 10,250,372,936.07
  5. Step 5: Solve for x
    x = 10,250,372,936.07/117,130.10
  6. Step 6: Final answer
    x = 87,512.72

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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.