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Finding the Fourth Proportional to 157,162.21, 216,883.82 and 85,542.72

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Solution

The fourth proportional to 157,162.21, 216,883.82 and 85,542.72 is: 118,048.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,162.21 : 216,883.82 = 85,542.72 : x
  2. Step 2: Convert to fraction form
    157,162.21/216,883.82 = 85,542.72/x
  3. Step 3: Cross multiply
    157,162.21x = 216,883.82 × 85,542.72
  4. Step 4: Simplify right side
    157,162.21x = 18,552,832,001.29
  5. Step 5: Solve for x
    x = 18,552,832,001.29/157,162.21
  6. Step 6: Final answer
    x = 118,048.94

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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.