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Finding the Fourth Proportional to 157,689.60, 236,145.60 and 104,812.80

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Solution

The fourth proportional to 157,689.60, 236,145.60 and 104,812.80 is: 156,960.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,689.60 : 236,145.60 = 104,812.80 : x
  2. Step 2: Convert to fraction form
    157,689.60/236,145.60 = 104,812.80/x
  3. Step 3: Cross multiply
    157,689.60x = 236,145.60 × 104,812.80
  4. Step 4: Simplify right side
    157,689.60x = 24,751,081,543.68
  5. Step 5: Solve for x
    x = 24,751,081,543.68/157,689.60
  6. Step 6: Final answer
    x = 156,960.77

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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.