Home / 151,382.16-208,907.38-87,756.86

Finding the Fourth Proportional to 151,382.16, 208,907.38 and 87,756.86

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Solution

The fourth proportional to 151,382.16, 208,907.38 and 87,756.86 is: 121,104.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,382.16 : 208,907.38 = 87,756.86 : x
  2. Step 2: Convert to fraction form
    151,382.16/208,907.38 = 87,756.86/x
  3. Step 3: Cross multiply
    151,382.16x = 208,907.38 × 87,756.86
  4. Step 4: Simplify right side
    151,382.16x = 18,333,055,219.10
  5. Step 5: Solve for x
    x = 18,333,055,219.10/151,382.16
  6. Step 6: Final answer
    x = 121,104.47

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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.