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Finding the Fourth Proportional to 108,000.70, 161,979.45 and 51,840.70

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Solution

The fourth proportional to 108,000.70, 161,979.45 and 51,840.70 is: 77,750.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,000.70 : 161,979.45 = 51,840.70 : x
  2. Step 2: Convert to fraction form
    108,000.70/161,979.45 = 51,840.70/x
  3. Step 3: Cross multiply
    108,000.70x = 161,979.45 × 51,840.70
  4. Step 4: Simplify right side
    108,000.70x = 8,397,128,073.62
  5. Step 5: Solve for x
    x = 8,397,128,073.62/108,000.70
  6. Step 6: Final answer
    x = 77,750.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.