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Finding the Fourth Proportional to 169,245.36, 253,802.40 and 90,316.53

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Solution

The fourth proportional to 169,245.36, 253,802.40 and 90,316.53 is: 135,439.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,245.36 : 253,802.40 = 90,316.53 : x
  2. Step 2: Convert to fraction form
    169,245.36/253,802.40 = 90,316.53/x
  3. Step 3: Cross multiply
    169,245.36x = 253,802.40 × 90,316.53
  4. Step 4: Simplify right side
    169,245.36x = 22,922,552,073.67
  5. Step 5: Solve for x
    x = 22,922,552,073.67/169,245.36
  6. Step 6: Final answer
    x = 135,439.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.