Home / 188,665.16-260,356.56-103,780.40

Finding the Fourth Proportional to 188,665.16, 260,356.56 and 103,780.40

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Solution

The fourth proportional to 188,665.16, 260,356.56 and 103,780.40 is: 143,216.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,665.16 : 260,356.56 = 103,780.40 : x
  2. Step 2: Convert to fraction form
    188,665.16/260,356.56 = 103,780.40/x
  3. Step 3: Cross multiply
    188,665.16x = 260,356.56 × 103,780.40
  4. Step 4: Simplify right side
    188,665.16x = 27,019,907,939.42
  5. Step 5: Solve for x
    x = 27,019,907,939.42/188,665.16
  6. Step 6: Final answer
    x = 143,216.20

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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.