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Finding the Fourth Proportional to 118,157.60, 163,001.21 and 79,930.52

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Solution

The fourth proportional to 118,157.60, 163,001.21 and 79,930.52 is: 110,266.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,157.60 : 163,001.21 = 79,930.52 : x
  2. Step 2: Convert to fraction form
    118,157.60/163,001.21 = 79,930.52/x
  3. Step 3: Cross multiply
    118,157.60x = 163,001.21 × 79,930.52
  4. Step 4: Simplify right side
    118,157.60x = 13,028,771,483.78
  5. Step 5: Solve for x
    x = 13,028,771,483.78/118,157.60
  6. Step 6: Final answer
    x = 110,266.05

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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.