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Finding the Fourth Proportional to 152,693.78, 210,717.47 and 85,625.78

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Solution

The fourth proportional to 152,693.78, 210,717.47 and 85,625.78 is: 118,163.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,693.78 : 210,717.47 = 85,625.78 : x
  2. Step 2: Convert to fraction form
    152,693.78/210,717.47 = 85,625.78/x
  3. Step 3: Cross multiply
    152,693.78x = 210,717.47 × 85,625.78
  4. Step 4: Simplify right side
    152,693.78x = 18,042,847,300.25
  5. Step 5: Solve for x
    x = 18,042,847,300.25/152,693.78
  6. Step 6: Final answer
    x = 118,163.60

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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.