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Finding the Fourth Proportional to 150,980.68, 208,363.62 and 99,905.32

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Solution

The fourth proportional to 150,980.68, 208,363.62 and 99,905.32 is: 137,876.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,980.68 : 208,363.62 = 99,905.32 : x
  2. Step 2: Convert to fraction form
    150,980.68/208,363.62 = 99,905.32/x
  3. Step 3: Cross multiply
    150,980.68x = 208,363.62 × 99,905.32
  4. Step 4: Simplify right side
    150,980.68x = 20,816,634,132.46
  5. Step 5: Solve for x
    x = 20,816,634,132.46/150,980.68
  6. Step 6: Final answer
    x = 137,876.15

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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.