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Finding the Fourth Proportional to 115,666.80, 173,845.80 and 100,460.40

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Solution

The fourth proportional to 115,666.80, 173,845.80 and 100,460.40 is: 150,990.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,666.80 : 173,845.80 = 100,460.40 : x
  2. Step 2: Convert to fraction form
    115,666.80/173,845.80 = 100,460.40/x
  3. Step 3: Cross multiply
    115,666.80x = 173,845.80 × 100,460.40
  4. Step 4: Simplify right side
    115,666.80x = 17,464,618,606.32
  5. Step 5: Solve for x
    x = 17,464,618,606.32/115,666.80
  6. Step 6: Final answer
    x = 150,990.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.