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Finding the Fourth Proportional to 157,048.73, 216,726.27 and 85,429.03

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Solution

The fourth proportional to 157,048.73, 216,726.27 and 85,429.03 is: 117,891.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,048.73 : 216,726.27 = 85,429.03 : x
  2. Step 2: Convert to fraction form
    157,048.73/216,726.27 = 85,429.03/x
  3. Step 3: Cross multiply
    157,048.73x = 216,726.27 × 85,429.03
  4. Step 4: Simplify right side
    157,048.73x = 18,514,715,021.62
  5. Step 5: Solve for x
    x = 18,514,715,021.62/157,048.73
  6. Step 6: Final answer
    x = 117,891.53

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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.