Home / 188,397.12-259,988-103,511.36

Finding the Fourth Proportional to 188,397.12, 259,988 and 103,511.36

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Solution

The fourth proportional to 188,397.12, 259,988 and 103,511.36 is: 142,845.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,397.12 : 259,988 = 103,511.36 : x
  2. Step 2: Convert to fraction form
    188,397.12/259,988 = 103,511.36/x
  3. Step 3: Cross multiply
    188,397.12x = 259,988 × 103,511.36
  4. Step 4: Simplify right side
    188,397.12x = 26,911,711,463.68
  5. Step 5: Solve for x
    x = 26,911,711,463.68/188,397.12
  6. Step 6: Final answer
    x = 142,845.66

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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.