Home / 151,356.94-208,897.18-87,731.64

Finding the Fourth Proportional to 151,356.94, 208,897.18 and 87,731.64

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Solution

The fourth proportional to 151,356.94, 208,897.18 and 87,731.64 is: 121,083.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,356.94 : 208,897.18 = 87,731.64 : x
  2. Step 2: Convert to fraction form
    151,356.94/208,897.18 = 87,731.64/x
  3. Step 3: Cross multiply
    151,356.94x = 208,897.18 × 87,731.64
  4. Step 4: Simplify right side
    151,356.94x = 18,326,891,973.45
  5. Step 5: Solve for x
    x = 18,326,891,973.45/151,356.94
  6. Step 6: Final answer
    x = 121,083.92

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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.