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Finding the Fourth Proportional to 108,900, 150,274.80 and 60,501.60

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Solution

The fourth proportional to 108,900, 150,274.80 and 60,501.60 is: 83,488.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,900 : 150,274.80 = 60,501.60 : x
  2. Step 2: Convert to fraction form
    108,900/150,274.80 = 60,501.60/x
  3. Step 3: Cross multiply
    108,900x = 150,274.80 × 60,501.60
  4. Step 4: Simplify right side
    108,900x = 9,091,865,839.68
  5. Step 5: Solve for x
    x = 9,091,865,839.68/108,900
  6. Step 6: Final answer
    x = 83,488.21

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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.