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Finding the Fourth Proportional to 515,153.60, 772,767.29 and 136,070.54

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Solution

The fourth proportional to 515,153.60, 772,767.29 and 136,070.54 is: 204,115.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,153.60 : 772,767.29 = 136,070.54 : x
  2. Step 2: Convert to fraction form
    515,153.60/772,767.29 = 136,070.54/x
  3. Step 3: Cross multiply
    515,153.60x = 772,767.29 × 136,070.54
  4. Step 4: Simplify right side
    515,153.60x = 105,150,863,226.87
  5. Step 5: Solve for x
    x = 105,150,863,226.87/515,153.60
  6. Step 6: Final answer
    x = 204,115.55

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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.