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Finding the Fourth Proportional to 153,059.63, 211,255.70 and 85,099.82

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Solution

The fourth proportional to 153,059.63, 211,255.70 and 85,099.82 is: 117,456.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,059.63 : 211,255.70 = 85,099.82 : x
  2. Step 2: Convert to fraction form
    153,059.63/211,255.70 = 85,099.82/x
  3. Step 3: Cross multiply
    153,059.63x = 211,255.70 × 85,099.82
  4. Step 4: Simplify right side
    153,059.63x = 17,977,820,562.20
  5. Step 5: Solve for x
    x = 17,977,820,562.20/153,059.63
  6. Step 6: Final answer
    x = 117,456.32

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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.