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Finding the Fourth Proportional to 152,818.60, 210,905.22 and 89,152.60

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Solution

The fourth proportional to 152,818.60, 210,905.22 and 89,152.60 is: 123,039.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,818.60 : 210,905.22 = 89,152.60 : x
  2. Step 2: Convert to fraction form
    152,818.60/210,905.22 = 89,152.60/x
  3. Step 3: Cross multiply
    152,818.60x = 210,905.22 × 89,152.60
  4. Step 4: Simplify right side
    152,818.60x = 18,802,748,716.57
  5. Step 5: Solve for x
    x = 18,802,748,716.57/152,818.60
  6. Step 6: Final answer
    x = 123,039.66

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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.