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Finding the Fourth Proportional to 117,633.28, 162,353.28 and 85,907.20

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Solution

The fourth proportional to 117,633.28, 162,353.28 and 85,907.20 is: 118,566.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,633.28 : 162,353.28 = 85,907.20 : x
  2. Step 2: Convert to fraction form
    117,633.28/162,353.28 = 85,907.20/x
  3. Step 3: Cross multiply
    117,633.28x = 162,353.28 × 85,907.20
  4. Step 4: Simplify right side
    117,633.28x = 13,947,315,695.62
  5. Step 5: Solve for x
    x = 13,947,315,695.62/117,633.28
  6. Step 6: Final answer
    x = 118,566.07

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1.5x scale

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.