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Finding the Fourth Proportional to 153,009.60, 211,149.02 and 85,024.82

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Solution

The fourth proportional to 153,009.60, 211,149.02 and 85,024.82 is: 117,331.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,009.60 : 211,149.02 = 85,024.82 : x
  2. Step 2: Convert to fraction form
    153,009.60/211,149.02 = 85,024.82/x
  3. Step 3: Cross multiply
    153,009.60x = 211,149.02 × 85,024.82
  4. Step 4: Simplify right side
    153,009.60x = 17,952,907,418.68
  5. Step 5: Solve for x
    x = 17,952,907,418.68/153,009.60
  6. Step 6: Final answer
    x = 117,331.90

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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.