Home / 188,478.09-260,115.71-103,612.77

Finding the Fourth Proportional to 188,478.09, 260,115.71 and 103,612.77

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Solution

The fourth proportional to 188,478.09, 260,115.71 and 103,612.77 is: 142,994.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,478.09 : 260,115.71 = 103,612.77 : x
  2. Step 2: Convert to fraction form
    188,478.09/260,115.71 = 103,612.77/x
  3. Step 3: Cross multiply
    188,478.09x = 260,115.71 × 103,612.77
  4. Step 4: Simplify right side
    188,478.09x = 26,951,308,715.55
  5. Step 5: Solve for x
    x = 26,951,308,715.55/188,478.09
  6. Step 6: Final answer
    x = 142,994.39

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1.5x scale

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.