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Finding the Fourth Proportional to 153,525.78, 211,862.39 and 85,542.48

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Solution

The fourth proportional to 153,525.78, 211,862.39 and 85,542.48 is: 118,046.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,525.78 : 211,862.39 = 85,542.48 : x
  2. Step 2: Convert to fraction form
    153,525.78/211,862.39 = 85,542.48/x
  3. Step 3: Cross multiply
    153,525.78x = 211,862.39 × 85,542.48
  4. Step 4: Simplify right side
    153,525.78x = 18,123,233,831.61
  5. Step 5: Solve for x
    x = 18,123,233,831.61/153,525.78
  6. Step 6: Final answer
    x = 118,046.84

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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.