Home / 151,056.66-208,468.38-99,981.39

Finding the Fourth Proportional to 151,056.66, 208,468.38 and 99,981.39

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Solution

The fourth proportional to 151,056.66, 208,468.38 and 99,981.39 is: 137,981.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,056.66 : 208,468.38 = 99,981.39 : x
  2. Step 2: Convert to fraction form
    151,056.66/208,468.38 = 99,981.39/x
  3. Step 3: Cross multiply
    151,056.66x = 208,468.38 × 99,981.39
  4. Step 4: Simplify right side
    151,056.66x = 20,842,958,403.45
  5. Step 5: Solve for x
    x = 20,842,958,403.45/151,056.66
  6. Step 6: Final answer
    x = 137,981.06

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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.