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Finding the Fourth Proportional to 178,661.69, 246,575 and 103,210.19

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Solution

The fourth proportional to 178,661.69, 246,575 and 103,210.19 is: 142,442.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,661.69 : 246,575 = 103,210.19 : x
  2. Step 2: Convert to fraction form
    178,661.69/246,575 = 103,210.19/x
  3. Step 3: Cross multiply
    178,661.69x = 246,575 × 103,210.19
  4. Step 4: Simplify right side
    178,661.69x = 25,449,052,599.25
  5. Step 5: Solve for x
    x = 25,449,052,599.25/178,661.69
  6. Step 6: Final answer
    x = 142,442.69

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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.