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Finding the Fourth Proportional to 152,866.51, 210,961.85 and 88,333.61

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Solution

The fourth proportional to 152,866.51, 210,961.85 and 88,333.61 is: 121,903.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,866.51 : 210,961.85 = 88,333.61 : x
  2. Step 2: Convert to fraction form
    152,866.51/210,961.85 = 88,333.61/x
  3. Step 3: Cross multiply
    152,866.51x = 210,961.85 × 88,333.61
  4. Step 4: Simplify right side
    152,866.51x = 18,635,020,727.97
  5. Step 5: Solve for x
    x = 18,635,020,727.97/152,866.51
  6. Step 6: Final answer
    x = 121,903.88

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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.