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Finding the Fourth Proportional to 118,156.10, 162,999.14 and 79,929.02

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Solution

The fourth proportional to 118,156.10, 162,999.14 and 79,929.02 is: 110,263.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,156.10 : 162,999.14 = 79,929.02 : x
  2. Step 2: Convert to fraction form
    118,156.10/162,999.14 = 79,929.02/x
  3. Step 3: Cross multiply
    118,156.10x = 162,999.14 × 79,929.02
  4. Step 4: Simplify right side
    118,156.10x = 13,028,361,528.90
  5. Step 5: Solve for x
    x = 13,028,361,528.90/118,156.10
  6. Step 6: Final answer
    x = 110,263.98

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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.